Migrate downloads.mojom to the new Mojo types

Convert the implementation and all users of the
downloads::mojom::PageHandlerFactory, PageHandler and Page interfaces.

Bug: 955171
Change-Id: I49c00905b4b3b2df318b0b0147b84bb04ca8f48a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1805642Reviewed-by: Ken Buchanan <kenrb@chromium.org>
Reviewed-by: Dan Beam <dbeam@chromium.org>
Reviewed-by: Asanka Herath <asanka@chromium.org>
Reviewed-by: Ken Rockot <rockot@google.com>
Commit-Queue: Henrique Ferreiro <hferreiro@igalia.com>
Cr-Commit-Position: refs/heads/master@{#698449}

chrome/browser/ui/webui/downloads/downloads.mojom

@@ -28,7 +28,8 @@ struct Data {
 };
 
 interface PageHandlerFactory {
-  CreatePageHandler(Page page, PageHandler& handler);
+  CreatePageHandler(pending_remote<Page> page,
+                    pending_receiver<PageHandler> handler);
 };
 
 interface PageHandler {

chrome/browser/ui/webui/downloads/downloads_dom_handler.cc

@@ -8,6 +8,7 @@
 #include <functional>
 #include <memory>
 #include <string>
+#include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ -30,6 +31,7 @@
 #include "chrome/browser/download/drag_download_item.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/webui/downloads/downloads.mojom.h"
 #include "chrome/browser/ui/webui/fileicon_source.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
@@ -44,6 +46,9 @@
 #include "content/public/browser/url_data_source.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_ui.h"
+#include "mojo/public/cpp/bindings/pending_receiver.h"
+#include "mojo/public/cpp/bindings/pending_remote.h"
+#include "mojo/public/cpp/bindings/receiver.h"
 #include "net/base/filename_util.h"
 #include "ui/base/l10n/time_format.h"
 #include "ui/gfx/image/image.h"
@@ -78,13 +83,13 @@ void CountDownloadsDOMEvents(DownloadsDOMEvent event) {
 }  // namespace
 
 DownloadsDOMHandler::DownloadsDOMHandler(
-    downloads::mojom::PageHandlerRequest request,
-    downloads::mojom::PagePtr page,
+    mojo::PendingReceiver<downloads::mojom::PageHandler> receiver,
+    mojo::PendingRemote<downloads::mojom::Page> page,
     content::DownloadManager* download_manager,
     content::WebUI* web_ui)
     : list_tracker_(download_manager, std::move(page)),
       web_ui_(web_ui),
-      binding_(this, std::move(request)) {
+      receiver_(this, std::move(receiver)) {
   // Create our fileicon data source.
   content::URLDataSource::Add(
       Profile::FromBrowserContext(download_manager->GetBrowserContext()),

chrome/browser/ui/webui/downloads/downloads_dom_handler.h

@@ -13,10 +13,12 @@
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/download/download_danger_prompt.h"
-#include "chrome/browser/ui/webui/downloads/downloads_list_tracker.h"
 #include "chrome/browser/ui/webui/downloads/downloads.mojom.h"
+#include "chrome/browser/ui/webui/downloads/downloads_list_tracker.h"
 #include "content/public/browser/web_contents_observer.h"
-#include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/public/cpp/bindings/pending_receiver.h"
+#include "mojo/public/cpp/bindings/pending_remote.h"
+#include "mojo/public/cpp/bindings/receiver.h"
 
 namespace content {
 class DownloadManager;
@@ -34,10 +36,11 @@ class DownloadItem;
 class DownloadsDOMHandler : public content::WebContentsObserver,
                             public downloads::mojom::PageHandler {
  public:
-  DownloadsDOMHandler(downloads::mojom::PageHandlerRequest request,
-                      downloads::mojom::PagePtr page,
-                      content::DownloadManager* download_manager,
-                      content::WebUI* web_ui);
+  DownloadsDOMHandler(
+      mojo::PendingReceiver<downloads::mojom::PageHandler> receiver,
+      mojo::PendingRemote<downloads::mojom::Page> page,
+      content::DownloadManager* download_manager,
+      content::WebUI* web_ui);
   ~DownloadsDOMHandler() override;
 
   // WebContentsObserver implementation.
@@ -123,7 +126,7 @@ class DownloadsDOMHandler : public content::WebContentsObserver,
 
   content::WebUI* web_ui_;
 
-  mojo::Binding<downloads::mojom::PageHandler> binding_;
+  mojo::Receiver<downloads::mojom::PageHandler> receiver_;
 
   base::WeakPtrFactory<DownloadsDOMHandler> weak_ptr_factory_{this};
 

chrome/browser/ui/webui/downloads/downloads_dom_handler_unittest.cc

@@ -16,6 +16,8 @@
 #include "content/public/test/mock_download_manager.h"
 #include "content/public/test/test_web_ui.h"
 #include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/public/cpp/bindings/pending_receiver.h"
+#include "mojo/public/cpp/bindings/pending_remote.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -23,13 +25,14 @@ namespace {
 
 class TestDownloadsDOMHandler : public DownloadsDOMHandler {
  public:
-  TestDownloadsDOMHandler(downloads::mojom::PagePtr page,
+  TestDownloadsDOMHandler(mojo::PendingRemote<downloads::mojom::Page> page,
                           content::DownloadManager* download_manager,
                           content::WebUI* web_ui)
-      : DownloadsDOMHandler(downloads::mojom::PageHandlerRequest(),
-                            std::move(page),
-                            download_manager,
-                            web_ui) {}
+      : DownloadsDOMHandler(
+            mojo::PendingReceiver<downloads::mojom::PageHandler>(),
+            std::move(page),
+            download_manager,
+            web_ui) {}
 
   using DownloadsDOMHandler::FinalizeRemovals;
   using DownloadsDOMHandler::RemoveDownloads;
@@ -66,7 +69,8 @@ class DownloadsDOMHandlerTest : public testing::Test {
 
 TEST_F(DownloadsDOMHandlerTest, ChecksForRemovedFiles) {
   EXPECT_CALL(*manager(), CheckForHistoryFilesRemoval());
-  TestDownloadsDOMHandler handler(page_.BindAndGetPtr(), manager(), web_ui());
+  TestDownloadsDOMHandler handler(page_.BindAndGetRemote(), manager(),
+                                  web_ui());
 
   testing::Mock::VerifyAndClear(manager());
 
@@ -74,7 +78,8 @@ TEST_F(DownloadsDOMHandlerTest, ChecksForRemovedFiles) {
 }
 
 TEST_F(DownloadsDOMHandlerTest, HandleGetDownloads) {
-  TestDownloadsDOMHandler handler(page_.BindAndGetPtr(), manager(), web_ui());
+  TestDownloadsDOMHandler handler(page_.BindAndGetRemote(), manager(),
+                                  web_ui());
 
   handler.GetDownloads(std::vector<std::string>());
 
@@ -110,7 +115,8 @@ TEST_F(DownloadsDOMHandlerTest, ClearAll) {
 
   ASSERT_TRUE(DownloadItemModel(&completed).ShouldShowInShelf());
 
-  TestDownloadsDOMHandler handler(page_.BindAndGetPtr(), manager(), web_ui());
+  TestDownloadsDOMHandler handler(page_.BindAndGetRemote(), manager(),
+                                  web_ui());
   handler.RemoveDownloads(downloads);
 
   // Ensure |completed| has been "soft removed" (i.e. can be revived).

chrome/browser/ui/webui/downloads/downloads_list_tracker.cc

@@ -5,6 +5,7 @@
 #include "chrome/browser/ui/webui/downloads/downloads_list_tracker.h"
 
 #include <iterator>
+#include <utility>
 #include <vector>
 
 #include "base/bind.h"
@@ -22,12 +23,15 @@
 #include "chrome/browser/download/download_query.h"
 #include "chrome/browser/extensions/api/downloads/downloads_api.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/webui/downloads/downloads.mojom.h"
 #include "components/download/public/common/download_danger_type.h"
 #include "components/download/public/common/download_item.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/download_item_utils.h"
 #include "content/public/browser/download_manager.h"
 #include "extensions/browser/extension_registry.h"
+#include "mojo/public/cpp/bindings/pending_remote.h"
+#include "mojo/public/cpp/bindings/remote.h"
 #include "net/base/filename_util.h"
 #include "third_party/icu/source/i18n/unicode/datefmt.h"
 #include "ui/base/l10n/time_format.h"
@@ -86,8 +90,9 @@ std::string TimeFormatLongDate(const base::Time& time) {
 
 }  // namespace
 
-DownloadsListTracker::DownloadsListTracker(DownloadManager* download_manager,
-                                           downloads::mojom::PagePtr page)
+DownloadsListTracker::DownloadsListTracker(
+    DownloadManager* download_manager,
+    mojo::PendingRemote<downloads::mojom::Page> page)
     : main_notifier_(download_manager, this),
       page_(std::move(page)),
       should_show_(base::BindRepeating(&DownloadsListTracker::ShouldShow,
@@ -181,7 +186,7 @@ void DownloadsListTracker::OnDownloadRemoved(DownloadManager* manager,
 
 DownloadsListTracker::DownloadsListTracker(
     DownloadManager* download_manager,
-    downloads::mojom::PagePtr page,
+    mojo::PendingRemote<downloads::mojom::Page> page,
     base::Callback<bool(const DownloadItem&)> should_show)
     : main_notifier_(download_manager, this),
       page_(std::move(page)),

chrome/browser/ui/webui/downloads/downloads_list_tracker.h

@@ -18,6 +18,8 @@
 #include "chrome/browser/ui/webui/downloads/downloads.mojom.h"
 #include "components/download/content/public/all_download_item_notifier.h"
 #include "components/download/public/common/download_item.h"
+#include "mojo/public/cpp/bindings/pending_remote.h"
+#include "mojo/public/cpp/bindings/remote.h"
 
 namespace content {
 class DownloadManager;
@@ -29,7 +31,7 @@ class DownloadsListTracker
     : public download::AllDownloadItemNotifier::Observer {
  public:
   DownloadsListTracker(content::DownloadManager* download_manager,
-                       downloads::mojom::PagePtr page);
+                       mojo::PendingRemote<downloads::mojom::Page> page);
   ~DownloadsListTracker() override;
 
   // Clears all downloads on the page if currently sending updates and resets
@@ -62,7 +64,7 @@ class DownloadsListTracker
  protected:
   // Testing constructor.
   DownloadsListTracker(content::DownloadManager* download_manager,
-                       downloads::mojom::PagePtr page,
+                       mojo::PendingRemote<downloads::mojom::Page> page,
                        base::Callback<bool(const download::DownloadItem&)>);
 
   // Creates a dictionary value that's sent to the page as JSON.
@@ -108,7 +110,7 @@ class DownloadsListTracker
   download::AllDownloadItemNotifier main_notifier_;
   std::unique_ptr<download::AllDownloadItemNotifier> original_notifier_;
 
-  downloads::mojom::PagePtr page_;
+  mojo::Remote<downloads::mojom::Page> page_;
 
   // Callback used to determine if an item should show on the page. Set to
   // |ShouldShow()| in default constructor, passed in while testing.

chrome/browser/ui/webui/downloads/downloads_list_tracker_unittest.cc

@@ -8,6 +8,7 @@
 #include <stdint.h>
 
 #include <memory>
+#include <utility>
 #include <vector>
 
 #include "base/bind.h"
@@ -16,12 +17,14 @@
 #include "base/strings/string_number_conversions.h"
 #include "base/time/time.h"
 #include "chrome/browser/download/download_item_model.h"
+#include "chrome/browser/ui/webui/downloads/downloads.mojom.h"
 #include "chrome/browser/ui/webui/downloads/mock_downloads_page.h"
 #include "chrome/test/base/testing_profile.h"
 #include "components/download/public/common/mock_download_item.h"
 #include "content/public/test/browser_task_environment.h"
 #include "content/public/test/mock_download_manager.h"
 #include "content/public/test/test_web_ui.h"
+#include "mojo/public/cpp/bindings/pending_remote.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -44,7 +47,7 @@ bool ShouldShowItem(const DownloadItem& item) {
 class TestDownloadsListTracker : public DownloadsListTracker {
  public:
   TestDownloadsListTracker(content::DownloadManager* manager,
-                           downloads::mojom::PagePtr page)
+                           mojo::PendingRemote<downloads::mojom::Page> page)
       : DownloadsListTracker(manager,
                              std::move(page),
                              base::BindRepeating(&ShouldShowItem)) {}
@@ -98,7 +101,7 @@ class DownloadsListTrackerTest : public testing::Test {
 
   void CreateTracker() {
     tracker_.reset(
-        new TestDownloadsListTracker(manager(), page_.BindAndGetPtr()));
+        new TestDownloadsListTracker(manager(), page_.BindAndGetRemote()));
   }
 
   TestingProfile* profile() { return &profile_; }
@@ -241,7 +244,7 @@ TEST_F(DownloadsListTrackerTest, Incognito) {
   ON_CALL(incognito_manager, GetDownload(0)).WillByDefault(Return(&item));
 
   testing::StrictMock<MockPage> page;
-  TestDownloadsListTracker tracker(&incognito_manager, page.BindAndGetPtr());
+  TestDownloadsListTracker tracker(&incognito_manager, page.BindAndGetRemote());
   EXPECT_TRUE(tracker.IsIncognito(item));
 }
 

chrome/browser/ui/webui/downloads/downloads_ui.cc

@@ -17,6 +17,7 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/safe_browsing/advanced_protection_status_manager.h"
 #include "chrome/browser/safe_browsing/advanced_protection_status_manager_factory.h"
+#include "chrome/browser/ui/webui/downloads/downloads.mojom.h"
 #include "chrome/browser/ui/webui/downloads/downloads_dom_handler.h"
 #include "chrome/browser/ui/webui/localized_string.h"
 #include "chrome/browser/ui/webui/managed_ui_handler.h"
@@ -37,6 +38,9 @@
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_ui.h"
 #include "content/public/browser/web_ui_data_source.h"
+#include "mojo/public/cpp/bindings/pending_receiver.h"
+#include "mojo/public/cpp/bindings/pending_remote.h"
+#include "mojo/public/cpp/bindings/receiver.h"
 #include "ui/base/accelerators/accelerator.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
@@ -163,7 +167,7 @@ content::WebUIDataSource* CreateDownloadsUIHTMLSource(Profile* profile) {
 ///////////////////////////////////////////////////////////////////////////////
 
 DownloadsUI::DownloadsUI(content::WebUI* web_ui)
-    : ui::MojoWebUIController(web_ui, true), page_factory_binding_(this) {
+    : ui::MojoWebUIController(web_ui, true) {
   Profile* profile = Profile::FromWebUI(web_ui);
   web_ui->AddMessageHandler(std::make_unique<MetricsHandler>());
 
@@ -187,20 +191,19 @@ base::RefCountedMemory* DownloadsUI::GetFaviconResourceBytes(
 }
 
 void DownloadsUI::BindPageHandlerFactory(
-    downloads::mojom::PageHandlerFactoryRequest request) {
-  if (page_factory_binding_.is_bound())
-    page_factory_binding_.Unbind();
+    mojo::PendingReceiver<downloads::mojom::PageHandlerFactory> receiver) {
+  page_factory_receiver_.reset();
 
-  page_factory_binding_.Bind(std::move(request));
+  page_factory_receiver_.Bind(std::move(receiver));
 }
 
 void DownloadsUI::CreatePageHandler(
-    downloads::mojom::PagePtr page,
-    downloads::mojom::PageHandlerRequest request) {
+    mojo::PendingRemote<downloads::mojom::Page> page,
+    mojo::PendingReceiver<downloads::mojom::PageHandler> receiver) {
   DCHECK(page);
   Profile* profile = Profile::FromWebUI(web_ui());
   DownloadManager* dlm = BrowserContext::GetDownloadManager(profile);
 
   page_handler_ = std::make_unique<DownloadsDOMHandler>(
-      std::move(request), std::move(page), dlm, web_ui());
+      std::move(receiver), std::move(page), dlm, web_ui());
 }

chrome/browser/ui/webui/downloads/downloads_ui.h

@@ -9,7 +9,9 @@
 
 #include "base/macros.h"
 #include "chrome/browser/ui/webui/downloads/downloads.mojom.h"
-#include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/public/cpp/bindings/pending_receiver.h"
+#include "mojo/public/cpp/bindings/pending_remote.h"
+#include "mojo/public/cpp/bindings/receiver.h"
 #include "ui/base/layout.h"
 #include "ui/webui/mojo_web_ui_controller.h"
 
@@ -30,15 +32,17 @@ class DownloadsUI : public ui::MojoWebUIController,
 
  private:
   void BindPageHandlerFactory(
-      downloads::mojom::PageHandlerFactoryRequest request);
+      mojo::PendingReceiver<downloads::mojom::PageHandlerFactory> receiver);
 
   // downloads::mojom::PageHandlerFactory:
-  void CreatePageHandler(downloads::mojom::PagePtr page,
-                         downloads::mojom::PageHandlerRequest request) override;
+  void CreatePageHandler(
+      mojo::PendingRemote<downloads::mojom::Page> page,
+      mojo::PendingReceiver<downloads::mojom::PageHandler> receiver) override;
 
   std::unique_ptr<DownloadsDOMHandler> page_handler_;
 
-  mojo::Binding<downloads::mojom::PageHandlerFactory> page_factory_binding_;
+  mojo::Receiver<downloads::mojom::PageHandlerFactory> page_factory_receiver_{
+      this};
 
   DISALLOW_COPY_AND_ASSIGN(DownloadsUI);
 };

chrome/browser/ui/webui/downloads/mock_downloads_page.cc

@@ -4,12 +4,15 @@
 
 #include "chrome/browser/ui/webui/downloads/mock_downloads_page.h"
 
-MockPage::MockPage() : binding_(this) {}
+#include "chrome/browser/ui/webui/downloads/downloads.mojom.h"
+#include "mojo/public/cpp/bindings/pending_remote.h"
+#include "mojo/public/cpp/bindings/receiver.h"
+
+MockPage::MockPage() = default;
+
 MockPage::~MockPage() = default;
 
-downloads::mojom::PagePtr MockPage::BindAndGetPtr() {
-  DCHECK(!binding_.is_bound());
-  downloads::mojom::PagePtr page;
-  binding_.Bind(mojo::MakeRequest(&page));
-  return page;
+mojo::PendingRemote<downloads::mojom::Page> MockPage::BindAndGetRemote() {
+  DCHECK(!receiver_.is_bound());
+  return receiver_.BindNewPipeAndPassRemote();
 }

chrome/browser/ui/webui/downloads/mock_downloads_page.h

@@ -8,8 +8,8 @@
 #include <vector>
 
 #include "chrome/browser/ui/webui/downloads/downloads.mojom.h"
-
-#include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/public/cpp/bindings/pending_remote.h"
+#include "mojo/public/cpp/bindings/receiver.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 class MockPage : public downloads::mojom::Page {
@@ -17,14 +17,14 @@ class MockPage : public downloads::mojom::Page {
   MockPage();
   ~MockPage() override;
 
-  downloads::mojom::PagePtr BindAndGetPtr();
+  mojo::PendingRemote<downloads::mojom::Page> BindAndGetRemote();
 
   MOCK_METHOD1(RemoveItem, void(int));
   MOCK_METHOD2(UpdateItem, void(int, downloads::mojom::DataPtr));
   MOCK_METHOD2(InsertItems, void(int, std::vector<downloads::mojom::DataPtr>));
   MOCK_METHOD0(ClearAll, void());
 
-  mojo::Binding<downloads::mojom::Page> binding_;
+  mojo::Receiver<downloads::mojom::Page> receiver_{this};
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_DOWNLOADS_MOCK_DOWNLOADS_PAGE_H_