Factor AppServiceProxy into two parts

One part (in chrome/services/app_service) is the interface.

The other part (in chrome/browser/apps/app_service) is the
implementation, including profile-specific implementation. For example,
App Publisher implementations depend on the profile, and the App Service
Proxy is a convenient place to initialize those App Publishers.

The latter subclasses (implements) the former.

Future commits may add further subclasses of the former, especially
fakes or mocks to use within tests.

BUG=826982

Change-Id: Ia23c3e2a3836e56749673f2f6792e5ef160da87a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1552211Reviewed-by: calamity <calamity@chromium.org>
Reviewed-by: Aga Wronska <agawronska@chromium.org>
Reviewed-by: Dominick Ng <dominickn@chromium.org>
Commit-Queue: Nigel Tao <nigeltao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#649743}

chrome/browser/BUILD.gn

@@ -2757,10 +2757,10 @@ jumbo_split_static_library("browser") {
       "apps/app_service/app_icon_factory.h",
       "apps/app_service/app_icon_source.cc",
       "apps/app_service/app_icon_source.h",
-      "apps/app_service/app_service_proxy.cc",
-      "apps/app_service/app_service_proxy.h",
       "apps/app_service/app_service_proxy_factory.cc",
       "apps/app_service/app_service_proxy_factory.h",
+      "apps/app_service/app_service_proxy_impl.cc",
+      "apps/app_service/app_service_proxy_impl.h",
       "apps/app_service/dip_px_util.cc",
       "apps/app_service/dip_px_util.h",
       "apps/intent_helper/apps_navigation_throttle.cc",
@@ -3319,6 +3319,7 @@ jumbo_split_static_library("browser") {
       "//chrome/browser/search:generated",
       "//chrome/common/importer:interfaces",
       "//chrome/services/app_service:lib",
+      "//chrome/services/app_service/public/cpp:app_service_proxy",
       "//chrome/services/app_service/public/cpp:app_update",
       "//chrome/services/app_service/public/cpp:icon_loader",
       "//components/feedback",

chrome/browser/apps/app_service/app_icon_source.cc

@@ -11,10 +11,11 @@
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
-#include "chrome/browser/apps/app_service/app_service_proxy.h"
+#include "chrome/browser/apps/app_service/app_service_proxy_factory.h"
 #include "chrome/browser/apps/app_service/dip_px_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/url_constants.h"
+#include "chrome/services/app_service/public/cpp/app_service_proxy.h"
 #include "extensions/grit/extensions_browser_resources.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "url/gurl.h"
@@ -80,7 +81,7 @@ void AppIconSource::StartDataRequest(
   int size_in_dip = apps_util::ConvertPxToDip(size);
 
   apps::AppServiceProxy* app_service_proxy =
-      apps::AppServiceProxy::Get(profile_);
+      apps::AppServiceProxyFactory::GetForProfile(profile_);
   if (!app_service_proxy) {
     LoadDefaultImage(callback);
     return;

chrome/browser/apps/app_service/app_service_proxy_factory.cc

@@ -5,7 +5,7 @@
 #include "chrome/browser/apps/app_service/app_service_proxy_factory.h"
 
 #include "base/feature_list.h"
-#include "chrome/browser/apps/app_service/app_service_proxy.h"
+#include "chrome/browser/apps/app_service/app_service_proxy_impl.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_features.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
@@ -26,7 +26,7 @@ AppServiceProxy* AppServiceProxyFactory::GetForProfile(Profile* profile) {
   //     is branched from (i.e. "inherit" the parent service),
   //   - return a temporary service just for the incognito session (probably
   //     the least sensible option).
-  return static_cast<AppServiceProxy*>(
+  return static_cast<AppServiceProxyImpl*>(
       AppServiceProxyFactory::GetInstance()->GetServiceForBrowserContext(
           profile, true /* create */));
 }
@@ -57,7 +57,7 @@ AppServiceProxyFactory::~AppServiceProxyFactory() = default;
 
 KeyedService* AppServiceProxyFactory::BuildServiceInstanceFor(
     content::BrowserContext* context) const {
-  return new AppServiceProxy(Profile::FromBrowserContext(context));
+  return new AppServiceProxyImpl(Profile::FromBrowserContext(context));
 }
 
 bool AppServiceProxyFactory::ServiceIsCreatedWithBrowserContext() const {

chrome/browser/apps/app_service/app_service_proxy.cc → chrome/browser/apps/app_service/app_service_proxy_impl.cc

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/apps/app_service/app_service_proxy.h"
+#include "chrome/browser/apps/app_service/app_service_proxy_impl.h"
 
 #include <utility>
 
@@ -16,10 +16,10 @@
 
 namespace apps {
 
-AppServiceProxy::InnerIconLoader::InnerIconLoader(AppServiceProxy* host)
+AppServiceProxyImpl::InnerIconLoader::InnerIconLoader(AppServiceProxyImpl* host)
     : host_(host), overriding_icon_loader_for_testing_(nullptr) {}
 
-apps::mojom::IconKeyPtr AppServiceProxy::InnerIconLoader::GetIconKey(
+apps::mojom::IconKeyPtr AppServiceProxyImpl::InnerIconLoader::GetIconKey(
     const std::string& app_id) {
   if (overriding_icon_loader_for_testing_) {
     return overriding_icon_loader_for_testing_->GetIconKey(app_id);
@@ -35,7 +35,7 @@ apps::mojom::IconKeyPtr AppServiceProxy::InnerIconLoader::GetIconKey(
 }
 
 std::unique_ptr<IconLoader::Releaser>
-AppServiceProxy::InnerIconLoader::LoadIconFromIconKey(
+AppServiceProxyImpl::InnerIconLoader::LoadIconFromIconKey(
     apps::mojom::AppType app_type,
     const std::string& app_id,
     apps::mojom::IconKeyPtr icon_key,
@@ -69,11 +69,12 @@ AppServiceProxy::InnerIconLoader::LoadIconFromIconKey(
 }
 
 // static
-AppServiceProxy* AppServiceProxy::Get(Profile* profile) {
-  return AppServiceProxyFactory::GetForProfile(profile);
+AppServiceProxyImpl* AppServiceProxyImpl::GetImplForTesting(Profile* profile) {
+  return static_cast<AppServiceProxyImpl*>(
+      AppServiceProxyFactory::GetForProfile(profile));
 }
 
-AppServiceProxy::AppServiceProxy(Profile* profile)
+AppServiceProxyImpl::AppServiceProxyImpl(Profile* profile)
     : inner_icon_loader_(this),
       outer_icon_loader_(&inner_icon_loader_,
                          apps::IconCache::GarbageCollectionPolicy::kEager) {
@@ -88,16 +89,16 @@ AppServiceProxy::AppServiceProxy(Profile* profile)
   connector->BindInterface(apps::mojom::kServiceName,
                            mojo::MakeRequest(&app_service_));
 
-  // The AppServiceProxy is a subscriber: something that wants to be able to
-  // list all known apps.
+  // The AppServiceProxyImpl is a subscriber: something that wants to be able
+  // to list all known apps.
   apps::mojom::SubscriberPtr subscriber;
   bindings_.AddBinding(this, mojo::MakeRequest(&subscriber));
   app_service_->RegisterSubscriber(std::move(subscriber), nullptr);
 
 #if defined(OS_CHROMEOS)
-  // The AppServiceProxy is also a publisher, of a variety of app types. That
-  // responsibility isn't intrinsically part of the AppServiceProxy, but doing
-  // that here, for each such app type, is as good a place as any.
+  // The AppServiceProxyImpl is also a publisher, of a variety of app types.
+  // That responsibility isn't intrinsically part of the AppServiceProxyImpl,
+  // but doing that here, for each such app type, is as good a place as any.
   built_in_chrome_os_apps_.Initialize(app_service_, profile);
   crostini_apps_.Initialize(app_service_, profile);
   extension_apps_.Initialize(app_service_, profile,
@@ -107,22 +108,15 @@ AppServiceProxy::AppServiceProxy(Profile* profile)
 #endif  // OS_CHROMEOS
 }
 
-AppServiceProxy::~AppServiceProxy() = default;
+AppServiceProxyImpl::~AppServiceProxyImpl() = default;
 
-apps::mojom::AppServicePtr& AppServiceProxy::AppService() {
-  return app_service_;
-}
-
-apps::AppRegistryCache& AppServiceProxy::AppRegistryCache() {
-  return cache_;
-}
-
-apps::mojom::IconKeyPtr AppServiceProxy::GetIconKey(const std::string& app_id) {
+apps::mojom::IconKeyPtr AppServiceProxyImpl::GetIconKey(
+    const std::string& app_id) {
   return outer_icon_loader_.GetIconKey(app_id);
 }
 
 std::unique_ptr<apps::IconLoader::Releaser>
-AppServiceProxy::LoadIconFromIconKey(
+AppServiceProxyImpl::LoadIconFromIconKey(
     apps::mojom::AppType app_type,
     const std::string& app_id,
     apps::mojom::IconKeyPtr icon_key,
@@ -135,7 +129,7 @@ AppServiceProxy::LoadIconFromIconKey(
       allow_placeholder_icon, std::move(callback));
 }
 
-void AppServiceProxy::Launch(const std::string& app_id,
+void AppServiceProxyImpl::Launch(const std::string& app_id,
                                  int32_t event_flags,
                                  apps::mojom::LaunchSource launch_source,
                                  int64_t display_id) {
@@ -148,7 +142,7 @@ void AppServiceProxy::Launch(const std::string& app_id,
   }
 }
 
-void AppServiceProxy::SetPermission(const std::string& app_id,
+void AppServiceProxyImpl::SetPermission(const std::string& app_id,
                                         apps::mojom::PermissionPtr permission) {
   if (app_service_.is_bound()) {
     cache_.ForOneApp(
@@ -159,7 +153,7 @@ void AppServiceProxy::SetPermission(const std::string& app_id,
   }
 }
 
-void AppServiceProxy::Uninstall(const std::string& app_id) {
+void AppServiceProxyImpl::Uninstall(const std::string& app_id) {
   if (app_service_.is_bound()) {
     cache_.ForOneApp(app_id, [this](const apps::AppUpdate& update) {
       app_service_->Uninstall(update.AppType(), update.AppId());
@@ -167,7 +161,7 @@ void AppServiceProxy::Uninstall(const std::string& app_id) {
   }
 }
 
-void AppServiceProxy::OpenNativeSettings(const std::string& app_id) {
+void AppServiceProxyImpl::OpenNativeSettings(const std::string& app_id) {
   if (app_service_.is_bound()) {
     cache_.ForOneApp(app_id, [this](const apps::AppUpdate& update) {
       app_service_->OpenNativeSettings(update.AppType(), update.AppId());
@@ -175,7 +169,7 @@ void AppServiceProxy::OpenNativeSettings(const std::string& app_id) {
   }
 }
 
-apps::IconLoader* AppServiceProxy::OverrideInnerIconLoaderForTesting(
+apps::IconLoader* AppServiceProxyImpl::OverrideInnerIconLoaderForTesting(
     apps::IconLoader* icon_loader) {
   apps::IconLoader* old =
       inner_icon_loader_.overriding_icon_loader_for_testing_;
@@ -183,7 +177,7 @@ apps::IconLoader* AppServiceProxy::OverrideInnerIconLoaderForTesting(
   return old;
 }
 
-void AppServiceProxy::Shutdown() {
+void AppServiceProxyImpl::Shutdown() {
 #if defined(OS_CHROMEOS)
   if (app_service_.is_bound()) {
     extension_apps_.Shutdown();
@@ -192,11 +186,11 @@ void AppServiceProxy::Shutdown() {
 #endif  // OS_CHROMEOS
 }
 
-void AppServiceProxy::OnApps(std::vector<apps::mojom::AppPtr> deltas) {
+void AppServiceProxyImpl::OnApps(std::vector<apps::mojom::AppPtr> deltas) {
   cache_.OnApps(std::move(deltas));
 }
 
-void AppServiceProxy::Clone(apps::mojom::SubscriberRequest request) {
+void AppServiceProxyImpl::Clone(apps::mojom::SubscriberRequest request) {
   bindings_.AddBinding(this, std::move(request));
 }
 

chrome/browser/apps/app_service/app_service_proxy.h → chrome/browser/apps/app_service/app_service_proxy_impl.h

@@ -2,16 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_APPS_APP_SERVICE_APP_SERVICE_PROXY_H_
-#define CHROME_BROWSER_APPS_APP_SERVICE_APP_SERVICE_PROXY_H_
+#ifndef CHROME_BROWSER_APPS_APP_SERVICE_APP_SERVICE_PROXY_IMPL_H_
+#define CHROME_BROWSER_APPS_APP_SERVICE_APP_SERVICE_PROXY_IMPL_H_
 
 #include <memory>
 
 #include "base/macros.h"
-#include "chrome/services/app_service/public/cpp/app_registry_cache.h"
+#include "chrome/services/app_service/public/cpp/app_service_proxy.h"
 #include "chrome/services/app_service/public/cpp/icon_cache.h"
-#include "chrome/services/app_service/public/mojom/app_service.mojom.h"
-#include "chrome/services/app_service/public/mojom/types.mojom.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
 
@@ -31,20 +29,23 @@ namespace apps {
 // proxy for a given Profile, and therefore share its caches.
 //
 // See chrome/services/app_service/README.md.
-class AppServiceProxy : public KeyedService,
-                        public apps::IconLoader,
+class AppServiceProxyImpl : public KeyedService,
+                            public apps::AppServiceProxy,
                             public apps::mojom::Subscriber {
  public:
-  static AppServiceProxy* Get(Profile* profile);
-
-  explicit AppServiceProxy(Profile* profile);
+  // This method returns an AppServiceProxyImpl, not just an AppServiceProxy, so
+  // that callers (which are presumably in test code) can then call other
+  // XxxForTesting methods.
+  //
+  // For regular (non-test) code, use AppServiceProxyFactory::GetForProfile
+  // instead.
+  static AppServiceProxyImpl* GetImplForTesting(Profile* profile);
 
-  ~AppServiceProxy() override;
+  explicit AppServiceProxyImpl(Profile* profile);
 
-  apps::mojom::AppServicePtr& AppService();
-  apps::AppRegistryCache& AppRegistryCache();
+  ~AppServiceProxyImpl() override;
 
-  // apps::IconLoader overrides.
+  // apps::AppServiceProxy (including apps::IconLoader) overrides.
   apps::mojom::IconKeyPtr GetIconKey(const std::string& app_id) override;
   std::unique_ptr<IconLoader::Releaser> LoadIconFromIconKey(
       apps::mojom::AppType app_type,
@@ -54,18 +55,14 @@ class AppServiceProxy : public KeyedService,
       int32_t size_hint_in_dip,
       bool allow_placeholder_icon,
       apps::mojom::Publisher::LoadIconCallback callback) override;
-
   void Launch(const std::string& app_id,
               int32_t event_flags,
               apps::mojom::LaunchSource launch_source,
-              int64_t display_id);
-
+              int64_t display_id) override;
   void SetPermission(const std::string& app_id,
-                     apps::mojom::PermissionPtr permission);
-
-  void Uninstall(const std::string& app_id);
-
-  void OpenNativeSettings(const std::string& app_id);
+                     apps::mojom::PermissionPtr permission) override;
+  void Uninstall(const std::string& app_id) override;
+  void OpenNativeSettings(const std::string& app_id) override;
 
   apps::IconLoader* OverrideInnerIconLoaderForTesting(
       apps::IconLoader* icon_loader);
@@ -74,8 +71,8 @@ class AppServiceProxy : public KeyedService,
   // An adapter, presenting an IconLoader interface based on the underlying
   // Mojo service (or on a fake implementation for testing).
   //
-  // Conceptually, the ASP (the AppServiceProxy) is itself such an adapter: UI
-  // clients call the IconLoader::LoadIconFromIconKey method (which the ASP
+  // Conceptually, the ASP (the AppServiceProxyImpl) is itself such an adapter:
+  // UI clients call the IconLoader::LoadIconFromIconKey method (which the ASP
   // implements) and the ASP translates (i.e. adapts) these to Mojo calls (or
   // C++ calls to the Fake). This diagram shows control flow going left to
   // right (with "=c=>" and "=m=>" denoting C++ and Mojo calls), and the
@@ -104,7 +101,7 @@ class AppServiceProxy : public KeyedService,
   // component: the one that ultimately talks to the Mojo service.
   //
   // The outer_icon_loader_ field (of type IconCache) is the "Outer" component:
-  // the entry point for calls into the AppServiceProxy.
+  // the entry point for calls into the AppServiceProxyImpl.
   //
   // Note that even if the ASP provides some icon caching, upstream UI clients
   // may want to introduce further icon caching. See the commentary where
@@ -113,7 +110,7 @@ class AppServiceProxy : public KeyedService,
   // IPC coalescing would be one of the "MoreDecorators".
   class InnerIconLoader : public apps::IconLoader {
    public:
-    explicit InnerIconLoader(AppServiceProxy* host);
+    explicit InnerIconLoader(AppServiceProxyImpl* host);
 
     // apps::IconLoader overrides.
     apps::mojom::IconKeyPtr GetIconKey(const std::string& app_id) override;
@@ -126,8 +123,9 @@ class AppServiceProxy : public KeyedService,
         bool allow_placeholder_icon,
         apps::mojom::Publisher::LoadIconCallback callback) override;
 
-    // |host_| owns |this|, as the InnerIconLoader is an AppServiceProxy field.
-    AppServiceProxy* host_;
+    // |host_| owns |this|, as the InnerIconLoader is an AppServiceProxyImpl
+    // field.
+    AppServiceProxyImpl* host_;
 
     apps::IconLoader* overriding_icon_loader_for_testing_;
   };
@@ -139,9 +137,7 @@ class AppServiceProxy : public KeyedService,
   void OnApps(std::vector<apps::mojom::AppPtr> deltas) override;
   void Clone(apps::mojom::SubscriberRequest request) override;
 
-  apps::mojom::AppServicePtr app_service_;
   mojo::BindingSet<apps::mojom::Subscriber> bindings_;
-  apps::AppRegistryCache cache_;
 
   // The LoadIconFromIconKey implementation sends a chained series of requests
   // through each icon loader, starting from the outer and working back to the
@@ -158,9 +154,9 @@ class AppServiceProxy : public KeyedService,
   ExtensionApps extension_web_apps_;
 #endif  // OS_CHROMEOS
 
-  DISALLOW_COPY_AND_ASSIGN(AppServiceProxy);
+  DISALLOW_COPY_AND_ASSIGN(AppServiceProxyImpl);
 };
 
 }  // namespace apps
 
-#endif  // CHROME_BROWSER_APPS_APP_SERVICE_APP_SERVICE_PROXY_H_
+#endif  // CHROME_BROWSER_APPS_APP_SERVICE_APP_SERVICE_PROXY_IMPL_H_

chrome/browser/apps/app_service/app_service_proxy_unittest.cc → chrome/browser/apps/app_service/app_service_proxy_impl_unittest.cc

@@ -6,12 +6,12 @@
 #include <vector>
 
 #include "base/callback.h"
-#include "chrome/browser/apps/app_service/app_service_proxy.h"
+#include "chrome/browser/apps/app_service/app_service_proxy_impl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/image/image_skia_rep.h"
 
-class AppServiceProxyTest : public testing::Test {
+class AppServiceProxyImplTest : public testing::Test {
  protected:
   using UniqueReleaser = std::unique_ptr<apps::IconLoader::Releaser>;
 
@@ -66,11 +66,11 @@ class AppServiceProxyTest : public testing::Test {
 
     return loader->LoadIcon(app_type, app_id, icon_compression,
                             size_hint_in_dip, allow_placeholder_icon,
-                            base::BindOnce(&AppServiceProxyTest::OnLoadIcon,
+                            base::BindOnce(&AppServiceProxyImplTest::OnLoadIcon,
                                            base::Unretained(this)));
   }
 
-  void OverrideAppServiceProxyInnerIconLoader(apps::AppServiceProxy* proxy,
+  void OverrideAppServiceProxyInnerIconLoader(apps::AppServiceProxyImpl* proxy,
                                               apps::IconLoader* icon_loader) {
     proxy->OverrideInnerIconLoaderForTesting(icon_loader);
   }
@@ -84,8 +84,8 @@ class AppServiceProxyTest : public testing::Test {
   int num_outer_finished_callbacks_ = 0;
 };
 
-TEST_F(AppServiceProxyTest, IconCache) {
-  apps::AppServiceProxy proxy(nullptr);
+TEST_F(AppServiceProxyImplTest, IconCache) {
+  apps::AppServiceProxyImpl proxy(nullptr);
   FakeIconLoader fake;
   OverrideAppServiceProxyInnerIconLoader(&proxy, &fake);
 

chrome/browser/apps/app_service/arc_apps.cc

@@ -10,7 +10,7 @@
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/containers/flat_map.h"
-#include "chrome/browser/apps/app_service/app_service_proxy.h"
+#include "chrome/browser/apps/app_service/app_service_proxy_factory.h"
 #include "chrome/browser/apps/app_service/arc_apps_factory.h"
 #include "chrome/browser/apps/app_service/dip_px_util.h"
 #include "chrome/browser/chromeos/arc/arc_util.h"
@@ -19,6 +19,7 @@
 #include "chrome/browser/ui/app_list/arc/arc_app_icon_descriptor.h"
 #include "chrome/browser/ui/app_list/arc/arc_app_utils.h"
 #include "chrome/grit/component_extension_resources.h"
+#include "chrome/services/app_service/public/cpp/app_service_proxy.h"
 #include "components/arc/app_permissions/arc_app_permissions_bridge.h"
 #include "components/arc/arc_service_manager.h"
 #include "components/arc/common/app.mojom.h"
@@ -172,8 +173,9 @@ ArcApps::ArcApps(Profile* profile)
 
   apps::mojom::PublisherPtr publisher;
   binding_.Bind(mojo::MakeRequest(&publisher));
-  apps::AppServiceProxy::Get(profile)->AppService()->RegisterPublisher(
-      std::move(publisher), apps::mojom::AppType::kArc);
+  apps::AppServiceProxyFactory::GetForProfile(profile)
+      ->AppService()
+      ->RegisterPublisher(std::move(publisher), apps::mojom::AppType::kArc);
 }
 
 ArcApps::~ArcApps() {

chrome/browser/apps/app_service/crostini_apps.cc

@@ -6,7 +6,6 @@
 
 #include <utility>
 
-#include "chrome/browser/apps/app_service/app_service_proxy.h"
 #include "chrome/browser/apps/app_service/dip_px_util.h"
 #include "chrome/browser/apps/app_service/launch_util.h"
 #include "chrome/browser/chromeos/crostini/crostini_registry_service_factory.h"

chrome/browser/chromeos/BUILD.gn

@@ -71,6 +71,7 @@ source_set("chromeos") {
     "//chrome/common",
     "//chrome/common/extensions/api",
     "//chrome/services/app_service:lib",
+    "//chrome/services/app_service/public/cpp:app_service_proxy",
     "//chrome/services/app_service/public/cpp:app_update",
     "//chrome/services/diagnosticsd/public/mojom",
     "//chrome/services/file_util/public/cpp",

chrome/browser/chromeos/kiosk_next_home/app_controller_service.cc

@@ -16,12 +16,13 @@
 #include "base/optional.h"
 #include "base/strings/string_util.h"
 #include "chrome/browser/apps/app_service/app_icon_source.h"
-#include "chrome/browser/apps/app_service/app_service_proxy.h"
+#include "chrome/browser/apps/app_service/app_service_proxy_factory.h"
 #include "chrome/browser/chromeos/kiosk_next_home/app_controller_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/app_list/arc/arc_app_list_prefs.h"
 #include "chrome/browser/ui/app_list/arc/arc_app_utils.h"
 #include "chrome/common/extensions/extension_constants.h"
+#include "chrome/services/app_service/public/cpp/app_service_proxy.h"
 #include "chrome/services/app_service/public/mojom/types.mojom.h"
 #include "chromeos/constants/chromeos_switches.h"
 #include "components/arc/arc_service_manager.h"
@@ -43,7 +44,7 @@ AppControllerService* AppControllerService::Get(
 
 AppControllerService::AppControllerService(Profile* profile)
     : profile_(profile),
-      app_service_proxy_(apps::AppServiceProxy::Get(profile)) {
+      app_service_proxy_(apps::AppServiceProxyFactory::GetForProfile(profile)) {
   DCHECK(profile);
   app_service_proxy_->AppRegistryCache().AddObserver(this);
 

chrome/browser/chromeos/kiosk_next_home/app_controller_service_unittest.cc

@@ -13,12 +13,12 @@
 #include "base/command_line.h"
 #include "base/optional.h"
 #include "base/test/bind_test_util.h"
-#include "chrome/browser/apps/app_service/app_service_proxy.h"
 #include "chrome/browser/apps/app_service/app_service_proxy_factory.h"
 #include "chrome/browser/ui/app_list/arc/arc_app_list_prefs.h"
 #include "chrome/browser/ui/app_list/arc/arc_app_test.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/services/app_service/public/cpp/app_registry_cache.h"
+#include "chrome/services/app_service/public/cpp/app_service_proxy.h"
 #include "chrome/services/app_service/public/cpp/app_update.h"
 #include "chrome/test/base/testing_profile.h"
 #include "chromeos/constants/chromeos_switches.h"
@@ -67,7 +67,7 @@ class AppControllerServiceTest : public testing::Test {
     profile_ = std::make_unique<TestingProfile>();
 
     arc_test_.SetUp(profile());
-    proxy_ = apps::AppServiceProxy::Get(profile());
+    proxy_ = apps::AppServiceProxyFactory::GetForProfile(profile());
 
     app_controller_service_ = AppControllerService::Get(profile());
 

chrome/browser/ui/BUILD.gn

@@ -1292,6 +1292,7 @@ jumbo_split_static_library("ui") {
       "//chrome/browser/ui/webui/app_management:mojo_bindings",
       "//chrome/common:buildflags",
       "//chrome/common:search_mojom",
+      "//chrome/services/app_service/public/cpp:app_service_proxy",
       "//chrome/services/app_service/public/cpp:app_update",
       "//chrome/services/app_service/public/mojom",
       "//components/feedback/proto",

chrome/browser/ui/app_list/app_service_app_item.cc

@@ -6,11 +6,12 @@
 
 #include "ash/public/cpp/app_list/app_list_config.h"
 #include "base/bind.h"
-#include "chrome/browser/apps/app_service/app_service_proxy.h"
+#include "chrome/browser/apps/app_service/app_service_proxy_factory.h"
 #include "chrome/browser/ui/app_list/app_list_controller_delegate.h"
 #include "chrome/browser/ui/app_list/arc/arc_app_context_menu.h"
 #include "chrome/browser/ui/app_list/crostini/crostini_app_context_menu.h"
 #include "chrome/browser/ui/app_list/extension_app_context_menu.h"
+#include "chrome/services/app_service/public/cpp/app_service_proxy.h"
 
 // static
 const char AppServiceAppItem::kItemType[] = "AppServiceAppItem";
@@ -118,7 +119,8 @@ void AppServiceAppItem::ExecuteLaunchCommand(int event_flags) {
 
 void AppServiceAppItem::Launch(int event_flags,
                                apps::mojom::LaunchSource launch_source) {
-  apps::AppServiceProxy* proxy = apps::AppServiceProxy::Get(profile());
+  apps::AppServiceProxy* proxy =
+      apps::AppServiceProxyFactory::GetForProfile(profile());
   if (proxy) {
     proxy->Launch(id(), event_flags, launch_source,
                   GetController()->GetAppListDisplayId());
@@ -126,7 +128,8 @@ void AppServiceAppItem::Launch(int event_flags,
 }
 
 void AppServiceAppItem::CallLoadIcon(bool allow_placeholder_icon) {
-  apps::AppServiceProxy* proxy = apps::AppServiceProxy::Get(profile());
+  apps::AppServiceProxy* proxy =
+      apps::AppServiceProxyFactory::GetForProfile(profile());
   if (proxy) {
     proxy->LoadIcon(app_type_, id(),
                     apps::mojom::IconCompression::kUncompressed,

chrome/browser/ui/app_list/app_service_app_model_builder.cc

@@ -4,8 +4,9 @@
 
 #include "chrome/browser/ui/app_list/app_service_app_model_builder.h"
 
-#include "chrome/browser/apps/app_service/app_service_proxy.h"
+#include "chrome/browser/apps/app_service/app_service_proxy_factory.h"
 #include "chrome/browser/ui/app_list/app_service_app_item.h"
+#include "chrome/services/app_service/public/cpp/app_service_proxy.h"
 
 AppServiceAppModelBuilder::AppServiceAppModelBuilder(
     AppListControllerDelegate* controller)
@@ -14,7 +15,8 @@ AppServiceAppModelBuilder::AppServiceAppModelBuilder(
 AppServiceAppModelBuilder::~AppServiceAppModelBuilder() = default;
 
 void AppServiceAppModelBuilder::BuildModel() {
-  apps::AppServiceProxy* proxy = apps::AppServiceProxy::Get(profile());
+  apps::AppServiceProxy* proxy =
+      apps::AppServiceProxyFactory::GetForProfile(profile());
   if (proxy) {
     proxy->AppRegistryCache().ForEachApp(
         [this](const apps::AppUpdate& update) { OnAppUpdate(update); });

chrome/browser/ui/app_list/search/app_search_provider.cc

@@ -28,7 +28,7 @@
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/clock.h"
-#include "chrome/browser/apps/app_service/app_service_proxy.h"
+#include "chrome/browser/apps/app_service/app_service_proxy_factory.h"
 #include "chrome/browser/chromeos/arc/arc_util.h"
 #include "chrome/browser/chromeos/crostini/crostini_manager.h"
 #include "chrome/browser/chromeos/crostini/crostini_registry_service.h"
@@ -56,6 +56,7 @@
 #include "chrome/common/chrome_features.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/grit/generated_resources.h"
+#include "chrome/services/app_service/public/cpp/app_service_proxy.h"
 #include "components/sync/base/model_type.h"
 #include "components/sync_sessions/session_sync_service.h"
 #include "extensions/browser/extension_prefs.h"
@@ -288,9 +289,10 @@ class AppServiceDataSource : public AppSearchProvider::DataSource,
  public:
   AppServiceDataSource(Profile* profile, AppSearchProvider* owner)
       : AppSearchProvider::DataSource(profile, owner),
-        icon_cache_(apps::AppServiceProxy::Get(profile),
+        icon_cache_(apps::AppServiceProxyFactory::GetForProfile(profile),
                     apps::IconCache::GarbageCollectionPolicy::kExplicit) {
-    apps::AppServiceProxy* proxy = apps::AppServiceProxy::Get(profile);
+    apps::AppServiceProxy* proxy =
+        apps::AppServiceProxyFactory::GetForProfile(profile);
     if (proxy) {
       Observe(&proxy->AppRegistryCache());
     }
@@ -300,7 +302,8 @@ class AppServiceDataSource : public AppSearchProvider::DataSource,
 
   // AppSearchProvider::DataSource overrides:
   void AddApps(AppSearchProvider::Apps* apps_vector) override {
-    apps::AppServiceProxy* proxy = apps::AppServiceProxy::Get(profile());
+    apps::AppServiceProxy* proxy =
+        apps::AppServiceProxyFactory::GetForProfile(profile());
     if (!proxy) {
       return;
     }

chrome/browser/ui/app_list/search/app_service_app_result.cc

@@ -7,10 +7,11 @@
 #include "ash/public/cpp/app_list/app_list_config.h"
 #include "ash/public/cpp/app_list/app_list_types.h"
 #include "base/bind.h"
-#include "chrome/browser/apps/app_service/app_service_proxy.h"
+#include "chrome/browser/apps/app_service/app_service_proxy_factory.h"
 #include "chrome/browser/ui/app_list/app_list_client_impl.h"
 #include "chrome/browser/ui/app_list/app_service_app_item.h"
 #include "chrome/browser/ui/app_list/search/internal_app_result.h"
+#include "chrome/services/app_service/public/cpp/app_service_proxy.h"
 #include "extensions/common/extension.h"
 
 namespace app_list {
@@ -26,7 +27,8 @@ AppServiceAppResult::AppServiceAppResult(Profile* profile,
       is_platform_app_(false),
       show_in_launcher_(false),
       weak_ptr_factory_(this) {
-  apps::AppServiceProxy* proxy = apps::AppServiceProxy::Get(profile);
+  apps::AppServiceProxy* proxy =
+      apps::AppServiceProxyFactory::GetForProfile(profile);
 
   if (proxy) {
     proxy->AppRegistryCache().ForOneApp(
@@ -117,7 +119,8 @@ void AppServiceAppResult::ExecuteLaunchCommand(int event_flags) {
 
 void AppServiceAppResult::Launch(int event_flags,
                                  apps::mojom::LaunchSource launch_source) {
-  apps::AppServiceProxy* proxy = apps::AppServiceProxy::Get(profile());
+  apps::AppServiceProxy* proxy =
+      apps::AppServiceProxyFactory::GetForProfile(profile());
   if (proxy) {
     proxy->Launch(app_id(), event_flags, launch_source,
                   controller()->GetAppListDisplayId());

chrome/browser/ui/app_list/search/tests/app_search_provider_unittest.cc

@@ -20,7 +20,7 @@
 #include "base/test/scoped_feature_list.h"
 #include "base/test/simple_test_clock.h"
 #include "base/time/time.h"
-#include "chrome/browser/apps/app_service/app_service_proxy.h"
+#include "chrome/browser/apps/app_service/app_service_proxy_impl.h"
 #include "chrome/browser/chromeos/crostini/crostini_test_helper.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/sync/session_sync_service_factory.h"
@@ -795,7 +795,8 @@ TEST_F(AppSearchProviderTest, AppServiceIconCache) {
     return;
   }
 
-  apps::AppServiceProxy* proxy = apps::AppServiceProxy::Get(profile());
+  apps::AppServiceProxyImpl* proxy =
+      apps::AppServiceProxyImpl::GetImplForTesting(profile());
   ASSERT_NE(proxy, nullptr);
 
   apps::StubIconLoader stub_icon_loader;

chrome/browser/ui/webui/app_management/app_management_page_handler.cc

@@ -9,10 +9,11 @@
 
 #include "base/containers/flat_map.h"
 #include "base/strings/utf_string_conversions.h"
-#include "chrome/browser/apps/app_service/app_service_proxy.h"
+#include "chrome/browser/apps/app_service/app_service_proxy_factory.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/services/app_service/public/cpp/app_registry_cache.h"
+#include "chrome/services/app_service/public/cpp/app_service_proxy.h"
 #include "chrome/services/app_service/public/mojom/types.mojom.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/common/extension.h"
@@ -48,7 +49,8 @@ AppManagementPageHandler::AppManagementPageHandler(
       shelf_delegate_(this)
 #endif
 {
-  apps::AppServiceProxy* proxy = apps::AppServiceProxy::Get(profile_);
+  apps::AppServiceProxy* proxy =
+      apps::AppServiceProxyFactory::GetForProfile(profile_);
 
   // TODO(crbug.com/826982): revisit pending decision on AppServiceProxy in
   // incognito
@@ -62,7 +64,8 @@ AppManagementPageHandler::~AppManagementPageHandler() {}
 
 void AppManagementPageHandler::OnPinnedChanged(const std::string& app_id,
                                                bool pinned) {
-  apps::AppServiceProxy* proxy = apps::AppServiceProxy::Get(profile_);
+  apps::AppServiceProxy* proxy =
+      apps::AppServiceProxyFactory::GetForProfile(profile_);
 
   // TODO(crbug.com/826982): revisit pending decision on AppServiceProxy in
   // incognito
@@ -87,7 +90,8 @@ void AppManagementPageHandler::OnPinnedChanged(const std::string& app_id,
 }
 
 void AppManagementPageHandler::GetApps(GetAppsCallback callback) {
-  apps::AppServiceProxy* proxy = apps::AppServiceProxy::Get(profile_);
+  apps::AppServiceProxy* proxy =
+      apps::AppServiceProxyFactory::GetForProfile(profile_);
 
   // TODO(crbug.com/826982): revisit pending decision on AppServiceProxy in
   // incognito
@@ -136,7 +140,8 @@ void AppManagementPageHandler::SetPinned(const std::string& app_id,
 void AppManagementPageHandler::SetPermission(
     const std::string& app_id,
     apps::mojom::PermissionPtr permission) {
-  apps::AppServiceProxy* proxy = apps::AppServiceProxy::Get(profile_);
+  apps::AppServiceProxy* proxy =
+      apps::AppServiceProxyFactory::GetForProfile(profile_);
 
   // TODO(crbug.com/826982): revisit pending decision on AppServiceProxy in
   // incognito
@@ -147,7 +152,8 @@ void AppManagementPageHandler::SetPermission(
 }
 
 void AppManagementPageHandler::Uninstall(const std::string& app_id) {
-  apps::AppServiceProxy* proxy = apps::AppServiceProxy::Get(profile_);
+  apps::AppServiceProxy* proxy =
+      apps::AppServiceProxyFactory::GetForProfile(profile_);
 
   // TODO(crbug.com/826982): revisit pending decision on AppServiceProxy in
   // incognito
@@ -158,7 +164,8 @@ void AppManagementPageHandler::Uninstall(const std::string& app_id) {
 }
 
 void AppManagementPageHandler::OpenNativeSettings(const std::string& app_id) {
-  apps::AppServiceProxy* proxy = apps::AppServiceProxy::Get(profile_);
+  apps::AppServiceProxy* proxy =
+      apps::AppServiceProxyFactory::GetForProfile(profile_);
 
   // TODO(crbug.com/826982): revisit pending decision on AppServiceProxy in
   // incognito

chrome/services/app_service/public/cpp/BUILD.gn

@@ -2,6 +2,18 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+source_set("app_service_proxy") {
+  sources = [
+    "app_service_proxy.cc",
+    "app_service_proxy.h",
+  ]
+
+  deps = [
+    ":app_update",
+    ":icon_loader",
+  ]
+}
+
 source_set("app_update") {
   sources = [
     "app_registry_cache.cc",

chrome/services/app_service/public/cpp/app_service_proxy.cc

+// Copyright 2018 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/services/app_service/public/cpp/app_service_proxy.h"
+
+#include <utility>
+
+namespace apps {
+
+AppServiceProxy::AppServiceProxy() = default;
+
+AppServiceProxy::~AppServiceProxy() = default;
+
+apps::mojom::AppServicePtr& AppServiceProxy::AppService() {
+  return app_service_;
+}
+
+apps::AppRegistryCache& AppServiceProxy::AppRegistryCache() {
+  return cache_;
+}
+
+apps::mojom::IconKeyPtr AppServiceProxy::GetIconKey(const std::string& app_id) {
+  return apps::mojom::IconKey::New();
+}
+
+std::unique_ptr<apps::IconLoader::Releaser>
+AppServiceProxy::LoadIconFromIconKey(
+    apps::mojom::AppType app_type,
+    const std::string& app_id,
+    apps::mojom::IconKeyPtr icon_key,
+    apps::mojom::IconCompression icon_compression,
+    int32_t size_hint_in_dip,
+    bool allow_placeholder_icon,
+    apps::mojom::Publisher::LoadIconCallback callback) {
+  std::move(callback).Run(apps::mojom::IconValue::New());
+  return nullptr;
+}
+
+void AppServiceProxy::Launch(const std::string& app_id,
+                             int32_t event_flags,
+                             apps::mojom::LaunchSource launch_source,
+                             int64_t display_id) {}
+
+void AppServiceProxy::SetPermission(const std::string& app_id,
+                                    apps::mojom::PermissionPtr permission) {}
+
+void AppServiceProxy::Uninstall(const std::string& app_id) {}
+
+void AppServiceProxy::OpenNativeSettings(const std::string& app_id) {}
+
+}  // namespace apps

chrome/services/app_service/public/cpp/app_service_proxy.h

+// Copyright 2018 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_SERVICES_APP_SERVICE_PUBLIC_CPP_APP_SERVICE_PROXY_H_
+#define CHROME_SERVICES_APP_SERVICE_PUBLIC_CPP_APP_SERVICE_PROXY_H_
+
+#include <memory>
+
+#include "base/macros.h"
+#include "chrome/services/app_service/public/cpp/app_registry_cache.h"
+#include "chrome/services/app_service/public/cpp/icon_loader.h"
+#include "chrome/services/app_service/public/mojom/app_service.mojom.h"
+
+namespace apps {
+
+// Abstract superclass (with default no-op methods) for the App Service proxy.
+// See chrome/services/app_service/README.md.
+//
+// Most code, outside of tests, should use an AppServiceProxyImpl.
+class AppServiceProxy : public apps::IconLoader {
+ public:
+  AppServiceProxy();
+  ~AppServiceProxy() override;
+
+  apps::mojom::AppServicePtr& AppService();
+  apps::AppRegistryCache& AppRegistryCache();
+
+  // apps::IconLoader overrides.
+  apps::mojom::IconKeyPtr GetIconKey(const std::string& app_id) override;
+  std::unique_ptr<IconLoader::Releaser> LoadIconFromIconKey(
+      apps::mojom::AppType app_type,
+      const std::string& app_id,
+      apps::mojom::IconKeyPtr icon_key,
+      apps::mojom::IconCompression icon_compression,
+      int32_t size_hint_in_dip,
+      bool allow_placeholder_icon,
+      apps::mojom::Publisher::LoadIconCallback callback) override;
+
+  virtual void Launch(const std::string& app_id,
+                      int32_t event_flags,
+                      apps::mojom::LaunchSource launch_source,
+                      int64_t display_id);
+
+  virtual void SetPermission(const std::string& app_id,
+                             apps::mojom::PermissionPtr permission);
+
+  virtual void Uninstall(const std::string& app_id);
+
+  virtual void OpenNativeSettings(const std::string& app_id);
+
+ protected:
+  apps::mojom::AppServicePtr app_service_;
+  apps::AppRegistryCache cache_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(AppServiceProxy);
+};
+
+}  // namespace apps
+
+#endif  // CHROME_SERVICES_APP_SERVICE_PUBLIC_CPP_APP_SERVICE_PROXY_H_

chrome/services/app_service/public/cpp/icon_cache.h

@@ -67,7 +67,7 @@ class IconCache : public IconLoader {
   };
 
   IconCache(IconLoader* wrapped_loader, GarbageCollectionPolicy gc_policy);
-  ~IconCache();
+  ~IconCache() override;
 
   // IconLoader overrides.
   apps::mojom::IconKeyPtr GetIconKey(const std::string& app_id) override;

chrome/services/app_service/public/cpp/icon_loader.cc

@@ -60,6 +60,10 @@ bool IconLoader::Key::operator<(const Key& that) const {
   return this->app_id_ < that.app_id_;
 }
 
+IconLoader::IconLoader() = default;
+
+IconLoader::~IconLoader() = default;
+
 std::unique_ptr<IconLoader::Releaser> IconLoader::LoadIcon(
     apps::mojom::AppType app_type,
     const std::string& app_id,

chrome/services/app_service/public/cpp/icon_loader.h

@@ -45,6 +45,9 @@ class IconLoader {
     DISALLOW_COPY_AND_ASSIGN(Releaser);
   };
 
+  IconLoader();
+  virtual ~IconLoader();
+
   // Looks up the IconKey for the given app ID.
   virtual apps::mojom::IconKeyPtr GetIconKey(const std::string& app_id) = 0;
 

chrome/services/app_service/public/cpp/stub_icon_loader.h

@@ -17,7 +17,7 @@ namespace apps {
 class StubIconLoader : public IconLoader {
  public:
   StubIconLoader();
-  ~StubIconLoader();
+  ~StubIconLoader() override;
 
   // IconLoader overrides.
   apps::mojom::IconKeyPtr GetIconKey(const std::string& app_id) override;

chrome/test/BUILD.gn

@@ -3551,7 +3551,7 @@ test("unit_tests") {
 
   if (!is_android) {
     sources += [
-      "../browser/apps/app_service/app_service_proxy_unittest.cc",
+      "../browser/apps/app_service/app_service_proxy_impl_unittest.cc",
       "../browser/apps/intent_helper/apps_navigation_throttle_unittest.cc",
       "../browser/apps/intent_helper/page_transition_util_unittest.cc",
       "../browser/devtools/devtools_file_system_indexer_unittest.cc",