Make BrowserWithTestWindowTests work with single process Mash

The InputDeviceClient needs to only be created once, so remove it
from AuraTestSuiteSetup. Otherwise, in BrowserWithTestWindowTest,
it gets created twice: during test suite setup, and as part of
OzonePlatform (due to AshTestHelper/ash::Shell).

Many tests still need one though, especially those that create a
WebContents, so add it to RenderViewHostTestEnabler, which should
take care of all RenderViewHostTestHarness tests or tests that create
the enabler manually.

Also update a few other tests to either create their own
RenderViewHostTestEnabler or InputDeviceClient as appropriate.

Also the InputDeviceManager can be a true singleton now (not thread-
singleton).

Bug: 905430
Change-Id: I2974968efe0415f0b56218e24b4fa546a1524fe1
Reviewed-on: https://chromium-review.googlesource.com/c/1341075Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Evan Stade <estade@chromium.org>
Cr-Commit-Position: refs/heads/master@{#611556}

chrome/browser/extensions/api/declarative_content/chrome_content_rules_registry_unittest.cc

@@ -14,7 +14,7 @@
 #include "content/public/browser/navigation_handle.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/frame_navigate_params.h"
-#include "content/public/test/test_web_contents_factory.h"
+#include "content/public/test/test_renderer_host.h"
 #include "extensions/common/extension.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -135,7 +135,9 @@ class DeclarativeChromeContentRulesRegistryTest : public testing::Test {
 
  private:
   TestExtensionEnvironment env_;
-  content::TestWebContentsFactory factory_;
+
+  // Must come after |env_| so only one UI MessageLoop is created.
+  content::RenderViewHostTestEnabler rvh_enabler_;
 
   DISALLOW_COPY_AND_ASSIGN(DeclarativeChromeContentRulesRegistryTest);
 };

chrome/browser/extensions/api/declarative_content/content_action_unittest.cc

@@ -131,6 +131,7 @@ class ParameterizedDeclarativeContentActionTest
 
 TEST_P(ParameterizedDeclarativeContentActionTest, ShowPageAction) {
   TestExtensionEnvironment env;
+  content::RenderViewHostTestEnabler rvh_enabler;
 
   scoped_refptr<const Extension> extension =
       ExtensionBuilder("extension")
@@ -198,6 +199,7 @@ INSTANTIATE_TEST_CASE_P(
 
 TEST(DeclarativeContentActionTest, SetIcon) {
   TestExtensionEnvironment env;
+  content::RenderViewHostTestEnabler rvh_enabler;
 
   // Simulate the process of passing ImageData to SetIcon::Create.
   SkBitmap bitmap;

chrome/browser/metrics/chrome_browser_main_extra_parts_metrics_unittest.cc

@@ -17,6 +17,8 @@
 
 #if defined(USE_OZONE) || defined(USE_X11)
 #include "services/ws/public/cpp/input_devices/input_device_client_test_api.h"
+#include "ui/aura/test/aura_test_utils.h"
+#include "ui/events/devices/input_device_manager.h"
 #endif
 
 namespace {
@@ -33,6 +35,7 @@ class ChromeBrowserMainExtraPartsMetricsTest : public testing::Test {
 
  protected:
 #if defined(USE_OZONE) || defined(USE_X11)
+  std::unique_ptr<ui::InputDeviceManager> input_manager_;
   ws::InputDeviceClientTestApi input_device_client_test_api_;
 #endif
 
@@ -50,6 +53,9 @@ class ChromeBrowserMainExtraPartsMetricsTest : public testing::Test {
 ChromeBrowserMainExtraPartsMetricsTest::
     ChromeBrowserMainExtraPartsMetricsTest() {
   display::Screen::SetScreenInstance(&test_screen_);
+#if defined(USE_OZONE) || defined(USE_X11)
+  input_manager_ = aura::test::CreateTestInputDeviceManager();
+#endif
 }
 
 ChromeBrowserMainExtraPartsMetricsTest::

chrome/browser/ui/passwords/manage_passwords_bubble_model_unittest.cc

@@ -34,6 +34,7 @@
 #include "components/ukm/test_ukm_recorder.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/test/test_browser_thread_bundle.h"
+#include "content/public/test/test_renderer_host.h"
 #include "content/public/test/web_contents_tester.h"
 #include "services/metrics/public/cpp/ukm_recorder.h"
 #include "services/metrics/public/cpp/ukm_source.h"
@@ -193,6 +194,7 @@ class ManagePasswordsBubbleModelTest : public ::testing::Test {
 
  private:
   content::TestBrowserThreadBundle thread_bundle_;
+  content::RenderViewHostTestEnabler rvh_enabler_;
   TestingProfile profile_;
   std::unique_ptr<content::WebContents> test_web_contents_;
   std::unique_ptr<ManagePasswordsBubbleModel> model_;

chrome/browser/ui/webui/settings/chromeos/device_keyboard_handler_unittest.cc

@@ -14,7 +14,9 @@
 #include "content/public/test/test_web_ui.h"
 #include "services/ws/public/cpp/input_devices/input_device_client_test_api.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "ui/aura/test/aura_test_utils.h"
 #include "ui/events/devices/input_device.h"
+#include "ui/events/devices/input_device_manager.h"
 
 namespace chromeos {
 namespace settings {
@@ -32,6 +34,8 @@ class TestKeyboardHandler : public KeyboardHandler {
 class KeyboardHandlerTest : public testing::Test {
  public:
   KeyboardHandlerTest() : handler_test_api_(&handler_) {
+    input_device_manager_ = aura::test::CreateTestInputDeviceManager();
+
     handler_.set_web_ui(&web_ui_);
     handler_.RegisterMessages();
     handler_.AllowJavascriptForTesting();
@@ -157,6 +161,7 @@ class KeyboardHandlerTest : public testing::Test {
     return has_internal_search_key;
   }
 
+  std::unique_ptr<ui::InputDeviceManager> input_device_manager_;
   ws::InputDeviceClientTestApi input_device_client_test_api_;
   content::TestWebUI web_ui_;
   TestKeyboardHandler handler_;

chrome/test/base/browser_with_test_window_test.cc

@@ -33,7 +33,6 @@
 
 #if defined(OS_CHROMEOS)
 #include "ash/test/ash_test_views_delegate.h"
-#include "chrome/test/base/ash_test_environment_chrome.h"
 #else
 #include "ui/views/test/test_views_delegate.h"
 #endif
@@ -66,13 +65,11 @@ BrowserWithTestWindowTest::BrowserWithTestWindowTest(
     bool hosted_app,
     content::TestBrowserThreadBundle::Options thread_bundle_options)
     : thread_bundle_(thread_bundle_options),
-      browser_type_(browser_type),
-      hosted_app_(hosted_app) {
 #if defined(OS_CHROMEOS)
-  ash_test_environment_ = std::make_unique<AshTestEnvironmentChrome>();
-  ash_test_helper_ =
-      std::make_unique<ash::AshTestHelper>(ash_test_environment_.get());
+      ash_test_helper_(&ash_test_environment_),
 #endif
+      browser_type_(browser_type),
+      hosted_app_(hosted_app) {
 }
 
 BrowserWithTestWindowTest::~BrowserWithTestWindowTest() {}
@@ -80,11 +77,16 @@ BrowserWithTestWindowTest::~BrowserWithTestWindowTest() {}
 void BrowserWithTestWindowTest::SetUp() {
   testing::Test::SetUp();
 #if defined(OS_CHROMEOS)
-  ash_test_helper_->SetUp(true);
-  ash_test_helper_->SetRunningOutsideAsh();
+  ash_test_helper_.SetUp(true);
+  ash_test_helper_.SetRunningOutsideAsh();
 #elif defined(TOOLKIT_VIEWS)
   views_test_helper_.reset(new views::ScopedViewsTestHelper());
 #endif
+
+  // This must be created after ash_test_helper_ is set up so that it doesn't
+  // create an InputDeviceManager.
+  rvh_test_enabler_ = std::make_unique<content::RenderViewHostTestEnabler>();
+
 #if defined(TOOLKIT_VIEWS)
   SetConstrainedWindowViewsClient(CreateChromeConstrainedWindowViewsClient());
 
@@ -131,7 +133,7 @@ void BrowserWithTestWindowTest::TearDown() {
   profile_manager_.reset();
 
 #if defined(OS_CHROMEOS)
-  ash_test_helper_->TearDown();
+  ash_test_helper_.TearDown();
 #elif defined(TOOLKIT_VIEWS)
   views_test_helper_.reset();
 #endif
@@ -146,7 +148,7 @@ void BrowserWithTestWindowTest::TearDown() {
 
 gfx::NativeWindow BrowserWithTestWindowTest::GetContext() {
 #if defined(OS_CHROMEOS)
-  return ash_test_helper_->CurrentContext();
+  return ash_test_helper_.CurrentContext();
 #elif defined(TOOLKIT_VIEWS)
   return views_test_helper_->GetContext();
 #else

chrome/test/base/browser_with_test_window_test.h

@@ -20,6 +20,7 @@
 #include "ash/test/ash_test_views_delegate.h"
 #include "chrome/browser/chromeos/login/users/scoped_test_user_manager.h"
 #include "chrome/browser/chromeos/settings/scoped_cros_settings_test_helper.h"
+#include "chrome/test/base/ash_test_environment_chrome.h"
 #else
 #include "ui/views/test/scoped_views_test_helper.h"
 #endif
@@ -35,13 +36,6 @@ class GURL;
 namespace views {
 class TestViewsDelegate;
 }
-#if defined(OS_CHROMEOS)
-namespace ash {
-namespace test {
-class AshTestEnvironment;
-}
-}
-#endif
 #endif
 
 namespace content {
@@ -124,7 +118,7 @@ class BrowserWithTestWindowTest : public testing::Test {
   }
 
 #if defined(OS_CHROMEOS)
-  ash::AshTestHelper* ash_test_helper() { return ash_test_helper_.get(); }
+  ash::AshTestHelper* ash_test_helper() { return &ash_test_helper_; }
 #endif
 
   // The context to help determine desktop type when creating new Widgets.
@@ -175,7 +169,7 @@ class BrowserWithTestWindowTest : public testing::Test {
 #if defined(TOOLKIT_VIEWS)
   views::TestViewsDelegate* test_views_delegate() {
 #if defined(OS_CHROMEOS)
-    return ash_test_helper_->test_views_delegate();
+    return ash_test_helper_.test_views_delegate();
 #else
     return views_test_helper_->test_views_delegate();
 #endif
@@ -197,17 +191,16 @@ class BrowserWithTestWindowTest : public testing::Test {
   std::unique_ptr<BrowserWindow> window_;  // Usually a TestBrowserWindow.
   std::unique_ptr<Browser> browser_;
 
-  // The existence of this object enables tests via
-  // RenderViewHostTester.
-  content::RenderViewHostTestEnabler rvh_test_enabler_;
-
 #if defined(OS_CHROMEOS)
-  std::unique_ptr<ash::AshTestEnvironment> ash_test_environment_;
-  std::unique_ptr<ash::AshTestHelper> ash_test_helper_;
+  AshTestEnvironmentChrome ash_test_environment_;
+  ash::AshTestHelper ash_test_helper_;
 #elif defined(TOOLKIT_VIEWS)
   std::unique_ptr<views::ScopedViewsTestHelper> views_test_helper_;
 #endif
 
+  // The existence of this object enables tests via RenderViewHostTester.
+  std::unique_ptr<content::RenderViewHostTestEnabler> rvh_test_enabler_;
+
 #if defined(OS_WIN)
   ui::ScopedOleInitializer ole_initializer_;
 #endif

content/browser/media/media_internals_unittest.cc

@@ -14,12 +14,10 @@
 #include "base/strings/utf_string_conversions.h"
 #include "base/synchronization/lock.h"
 #include "base/test/scoped_command_line.h"
-#include "base/test/test_message_loop.h"
-#include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "content/browser/media/session/media_session_impl.h"
-#include "content/public/test/test_browser_context.h"
 #include "content/public/test/test_browser_thread_bundle.h"
+#include "content/public/test/test_renderer_host.h"
 #include "content/public/test/test_service_manager_context.h"
 #include "content/test/test_web_contents.h"
 #include "media/base/audio_parameters.h"
@@ -29,8 +27,6 @@
 #include "services/media_session/public/cpp/switches.h"
 #include "services/media_session/public/mojom/audio_focus.mojom.h"
 #include "services/media_session/public/mojom/constants.mojom.h"
-#include "testing/gmock/include/gmock/gmock.h"
-#include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace {
@@ -44,16 +40,18 @@ using media_session::mojom::AudioFocusRequestStatePtr;
 // integer/string values.
 class MediaInternalsTestBase {
  public:
-  MediaInternalsTestBase() : media_internals_(nullptr) {
+  MediaInternalsTestBase() = default;
+  virtual ~MediaInternalsTestBase() = default;
+
+  void SetUpServiceManager() {
     scoped_command_line_.GetProcessCommandLine()->AppendSwitch(
         media_session::switches::kEnableAudioFocus);
 
     service_manager_context_ =
         std::make_unique<content::TestServiceManagerContext>();
-    media_internals_ = content::MediaInternals::GetInstance();
   }
 
-  virtual ~MediaInternalsTestBase() {}
+  void TearDownServiceManager() { service_manager_context_.reset(); }
 
  protected:
   // Extracts and deserializes the JSON update data; merges into |update_data_|.
@@ -107,14 +105,13 @@ class MediaInternalsTestBase {
     }
   }
 
-  const content::TestBrowserThreadBundle thread_bundle_;
   base::DictionaryValue update_data_;
 
-  content::MediaInternals* media_internals() const { return media_internals_; }
+  content::MediaInternals* media_internals() const {
+    return content::MediaInternals::GetInstance();
+  }
 
  private:
-  content::MediaInternals* media_internals_;
-
   base::test::ScopedCommandLine scoped_command_line_;
   std::unique_ptr<content::TestServiceManagerContext> service_manager_context_;
 };
@@ -132,14 +129,17 @@ class MediaInternalsVideoCaptureDeviceTest : public testing::Test,
       : update_cb_(base::Bind(
             &MediaInternalsVideoCaptureDeviceTest::UpdateCallbackImpl,
             base::Unretained(this))) {
+    SetUpServiceManager();
     media_internals()->AddUpdateCallback(update_cb_);
   }
 
   ~MediaInternalsVideoCaptureDeviceTest() override {
     media_internals()->RemoveUpdateCallback(update_cb_);
+    TearDownServiceManager();
   }
 
  protected:
+  const content::TestBrowserThreadBundle thread_bundle_;
   MediaInternals::UpdateCallback update_cb_;
 };
 
@@ -228,11 +228,13 @@ class MediaInternalsAudioLogTest
         test_component_(GetParam()),
         audio_log_(media_internals()->CreateAudioLog(test_component_,
                                                      kTestComponentID)) {
+    SetUpServiceManager();
     media_internals()->AddUpdateCallback(update_cb_);
   }
 
   virtual ~MediaInternalsAudioLogTest() {
     media_internals()->RemoveUpdateCallback(update_cb_);
+    TearDownServiceManager();
   }
 
  protected:
@@ -249,6 +251,8 @@ class MediaInternalsAudioLogTest
                        media::AudioParameters::DUCKING);
     return params;
   }
+
+  const content::TestBrowserThreadBundle thread_bundle_;
 };
 
 TEST_P(MediaInternalsAudioLogTest, AudioLogCreateStartStopErrorClose) {
@@ -319,15 +323,19 @@ const char kTestTitle2[] = "Test Title 2";
 
 }  // namespace
 
-class MediaInternalsAudioFocusTest : public testing::Test,
+class MediaInternalsAudioFocusTest : public RenderViewHostTestHarness,
                                      public MediaInternalsTestBase {
  public:
+  MediaInternalsAudioFocusTest() = default;
+  ~MediaInternalsAudioFocusTest() override = default;
+
   void SetUp() override {
+    RenderViewHostTestHarness::SetUp();
+    SetUpServiceManager();
+
     update_cb_ =
         base::BindRepeating(&MediaInternalsAudioFocusTest::UpdateCallbackImpl,
                             base::Unretained(this));
-
-    browser_context_.reset(new TestBrowserContext());
     run_loop_ = std::make_unique<base::RunLoop>();
 
     content::ServiceManagerConnection::GetForProcess()
@@ -339,7 +347,8 @@ class MediaInternalsAudioFocusTest : public testing::Test,
 
   void TearDown() override {
     content::MediaInternals::GetInstance()->RemoveUpdateCallback(update_cb_);
-    browser_context_.reset();
+    TearDownServiceManager();
+    RenderViewHostTestHarness::TearDown();
   }
 
  protected:
@@ -374,11 +383,6 @@ class MediaInternalsAudioFocusTest : public testing::Test,
     call_count_ = 0;
   }
 
-  std::unique_ptr<TestWebContents> CreateWebContents() {
-    return TestWebContents::Create(
-        browser_context_.get(), SiteInstance::Create(browser_context_.get()));
-  }
-
   void RemoveAllPlayersForTest(MediaSessionImpl* session) {
     session->RemoveAllPlayersForTest();
   }
@@ -417,15 +421,15 @@ class MediaInternalsAudioFocusTest : public testing::Test,
 
   base::Lock lock_;
   std::unique_ptr<base::RunLoop> run_loop_;
-  std::unique_ptr<TestBrowserContext> browser_context_;
 
   media_session::mojom::AudioFocusManagerPtr audio_focus_ptr_;
 };
 
 TEST_F(MediaInternalsAudioFocusTest, AudioFocusStateIsUpdated) {
   // Create a test media session and request audio focus.
-  std::unique_ptr<TestWebContents> web_contents1 = CreateWebContents();
-  web_contents1->SetTitle(base::UTF8ToUTF16(kTestTitle1));
+  std::unique_ptr<WebContents> web_contents1 = CreateTestWebContents();
+  static_cast<TestWebContents*>(web_contents1.get())
+      ->SetTitle(base::UTF8ToUTF16(kTestTitle1));
   MediaSessionImpl* media_session1 = MediaSessionImpl::Get(web_contents1.get());
   media_session1->RequestSystemAudioFocus(AudioFocusType::kGain);
   WaitForCallbackCount(1);
@@ -446,8 +450,9 @@ TEST_F(MediaInternalsAudioFocusTest, AudioFocusStateIsUpdated) {
   }
 
   // Create another media session.
-  std::unique_ptr<TestWebContents> web_contents2 = CreateWebContents();
-  web_contents2->SetTitle(base::UTF8ToUTF16(kTestTitle2));
+  std::unique_ptr<WebContents> web_contents2 = CreateTestWebContents();
+  static_cast<TestWebContents*>(web_contents2.get())
+      ->SetTitle(base::UTF8ToUTF16(kTestTitle2));
   MediaSessionImpl* media_session2 = MediaSessionImpl::Get(web_contents2.get());
   media_session2->RequestSystemAudioFocus(
       AudioFocusType::kGainTransientMayDuck);

content/browser/media/session/media_session_impl_unittest.cc

@@ -10,11 +10,9 @@
 #include "build/build_config.h"
 #include "content/browser/media/session/media_session_player_observer.h"
 #include "content/browser/media/session/mock_media_session_player_observer.h"
-#include "content/public/test/mock_render_process_host.h"
-#include "content/public/test/test_browser_context.h"
-#include "content/public/test/test_browser_thread_bundle.h"
+#include "content/public/common/service_manager_connection.h"
+#include "content/public/test/test_renderer_host.h"
 #include "content/public/test/test_service_manager_context.h"
-#include "content/test/test_web_contents.h"
 #include "media/base/media_content_type.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
@@ -74,7 +72,7 @@ class MockAudioFocusDelegate : public AudioFocusDelegate {
 
 }  // anonymous namespace
 
-class MediaSessionImplTest : public testing::Test {
+class MediaSessionImplTest : public RenderViewHostTestHarness {
  public:
   MediaSessionImplTest() = default;
 
@@ -82,10 +80,8 @@ class MediaSessionImplTest : public testing::Test {
     base::CommandLine::ForCurrentProcess()->AppendSwitch(
         media_session::switches::kEnableAudioFocus);
 
-    rph_factory_.reset(new MockRenderProcessHostFactory());
-    RenderProcessHostImpl::set_render_process_host_factory_for_testing(
-        rph_factory_.get());
-    browser_context_.reset(new TestBrowserContext());
+    RenderViewHostTestHarness::SetUp();
+
     player_observer_.reset(new MockMediaSessionPlayerObserver());
 
     // Connect to the Media Session service and bind |audio_focus_ptr_| to it.
@@ -98,9 +94,8 @@ class MediaSessionImplTest : public testing::Test {
 
   void TearDown() override {
     service_manager_context_.reset();
-    browser_context_.reset();
-    RenderProcessHostImpl::set_render_process_host_factory_for_testing(nullptr);
-    rph_factory_.reset();
+
+    RenderViewHostTestHarness::TearDown();
   }
 
   void RequestAudioFocus(MediaSessionImpl* session,
@@ -128,11 +123,6 @@ class MediaSessionImplTest : public testing::Test {
     session->FlushForTesting();
   }
 
-  std::unique_ptr<WebContents> CreateWebContents() {
-    return TestWebContents::Create(
-        browser_context_.get(), SiteInstance::Create(browser_context_.get()));
-  }
-
   std::unique_ptr<TestAudioFocusObserver> CreateAudioFocusObserver() {
     std::unique_ptr<TestAudioFocusObserver> observer =
         std::make_unique<TestAudioFocusObserver>();
@@ -153,17 +143,15 @@ class MediaSessionImplTest : public testing::Test {
   }
 
  private:
-  TestBrowserThreadBundle test_browser_thread_bundle_;
-
   media_session::mojom::AudioFocusManagerPtr audio_focus_ptr_;
 
   std::unique_ptr<TestServiceManagerContext> service_manager_context_;
-  std::unique_ptr<MockRenderProcessHostFactory> rph_factory_;
-  std::unique_ptr<TestBrowserContext> browser_context_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaSessionImplTest);
 };
 
 TEST_F(MediaSessionImplTest, SessionInfoState) {
-  std::unique_ptr<WebContents> web_contents(CreateWebContents());
+  std::unique_ptr<WebContents> web_contents(CreateTestWebContents());
   MediaSessionImpl* media_session = MediaSessionImpl::Get(web_contents.get());
   EXPECT_EQ(MediaSessionInfo::SessionState::kInactive, GetState(media_session));
 
@@ -229,7 +217,7 @@ TEST_F(MediaSessionImplTest, SessionInfoState) {
 }
 
 TEST_F(MediaSessionImplTest, NotifyDelegateOnStateChange) {
-  std::unique_ptr<WebContents> web_contents(CreateWebContents());
+  std::unique_ptr<WebContents> web_contents(CreateTestWebContents());
   MediaSessionImpl* media_session = MediaSessionImpl::Get(web_contents.get());
   MockAudioFocusDelegate* delegate = new MockAudioFocusDelegate();
   SetDelegateForTests(media_session, delegate);
@@ -260,7 +248,7 @@ TEST_F(MediaSessionImplTest, NotifyDelegateOnStateChange) {
 }
 
 TEST_F(MediaSessionImplTest, PepperForcesDuckAndRequestsFocus) {
-  std::unique_ptr<WebContents> web_contents(CreateWebContents());
+  std::unique_ptr<WebContents> web_contents(CreateTestWebContents());
   MediaSessionImpl* media_session = MediaSessionImpl::Get(web_contents.get());
 
   int player_id = player_observer_->StartNewPlayer();
@@ -284,7 +272,7 @@ TEST_F(MediaSessionImplTest, PepperForcesDuckAndRequestsFocus) {
 }
 
 TEST_F(MediaSessionImplTest, RegisterMojoObserver) {
-  std::unique_ptr<WebContents> web_contents(CreateWebContents());
+  std::unique_ptr<WebContents> web_contents(CreateTestWebContents());
   MediaSessionImpl* media_session = MediaSessionImpl::Get(web_contents.get());
 
   EXPECT_FALSE(HasMojoObservers(media_session));
@@ -296,7 +284,7 @@ TEST_F(MediaSessionImplTest, RegisterMojoObserver) {
 }
 
 TEST_F(MediaSessionImplTest, SessionInfo_PlaybackState) {
-  std::unique_ptr<WebContents> web_contents(CreateWebContents());
+  std::unique_ptr<WebContents> web_contents(CreateTestWebContents());
   MediaSessionImpl* media_session = MediaSessionImpl::Get(web_contents.get());
 
   EXPECT_EQ(MediaPlaybackState::kPaused,
@@ -322,7 +310,7 @@ TEST_F(MediaSessionImplTest, SessionInfo_PlaybackState) {
 #if !defined(OS_ANDROID)
 
 TEST_F(MediaSessionImplTest, WebContentsDestroyed_ReleasesFocus) {
-  std::unique_ptr<WebContents> web_contents(CreateWebContents());
+  std::unique_ptr<WebContents> web_contents(CreateTestWebContents());
   MediaSessionImpl* media_session = MediaSessionImpl::Get(web_contents.get());
 
   {
@@ -346,7 +334,7 @@ TEST_F(MediaSessionImplTest, WebContentsDestroyed_ReleasesFocus) {
 }
 
 TEST_F(MediaSessionImplTest, WebContentsDestroyed_ReleasesTransients) {
-  std::unique_ptr<WebContents> web_contents(CreateWebContents());
+  std::unique_ptr<WebContents> web_contents(CreateTestWebContents());
   MediaSessionImpl* media_session = MediaSessionImpl::Get(web_contents.get());
 
   {
@@ -370,11 +358,11 @@ TEST_F(MediaSessionImplTest, WebContentsDestroyed_ReleasesTransients) {
 }
 
 TEST_F(MediaSessionImplTest, WebContentsDestroyed_StopsDucking) {
-  std::unique_ptr<WebContents> web_contents_1(CreateWebContents());
+  std::unique_ptr<WebContents> web_contents_1(CreateTestWebContents());
   MediaSessionImpl* media_session_1 =
       MediaSessionImpl::Get(web_contents_1.get());
 
-  std::unique_ptr<WebContents> web_contents_2(CreateWebContents());
+  std::unique_ptr<WebContents> web_contents_2(CreateTestWebContents());
   MediaSessionImpl* media_session_2 =
       MediaSessionImpl::Get(web_contents_2.get());
 

content/public/test/test_renderer_host.cc

@@ -35,6 +35,7 @@
 #include "content/test/test_web_contents.h"
 #include "net/base/network_change_notifier.h"
 #include "ui/base/material_design/material_design_controller.h"
+#include "ui/events/devices/input_device_manager.h"
 
 #if defined(OS_ANDROID)
 #include "ui/android/dummy_screen_android.h"
@@ -47,6 +48,7 @@
 
 #if defined(USE_AURA)
 #include "ui/aura/test/aura_test_helper.h"
+#include "ui/aura/test/aura_test_utils.h"
 #include "ui/compositor/test/context_factories_for_test.h"
 #include "ui/wm/core/default_activation_client.h"
 #endif
@@ -160,6 +162,9 @@ RenderViewHostTestEnabler::RenderViewHostTestEnabler()
   if (base::ThreadTaskRunnerHandle::IsSet())
     ui::WindowResizeHelperMac::Get()->Init(base::ThreadTaskRunnerHandle::Get());
 #endif  // OS_MACOSX
+#if defined(USE_AURA)
+  input_device_client_ = aura::test::CreateTestInputDeviceManager();
+#endif
 }
 
 RenderViewHostTestEnabler::~RenderViewHostTestEnabler() {

content/public/test/test_renderer_host.h

@@ -39,6 +39,7 @@ class NetworkChangeNotifier;
 }
 
 namespace ui {
+class InputDeviceManager;
 class ScopedOleInitializer;
 }
 
@@ -179,6 +180,9 @@ class RenderViewHostTestEnabler {
 
 #if defined(OS_ANDROID)
   std::unique_ptr<display::Screen> screen_;
+#endif
+#if defined(USE_AURA)
+  std::unique_ptr<ui::InputDeviceManager> input_device_client_;
 #endif
   std::unique_ptr<base::test::ScopedTaskEnvironment> task_environment_;
   std::unique_ptr<MockRenderProcessHostFactory> rph_factory_;

ui/aura/test/aura_test_suite_setup.cc

@@ -10,32 +10,12 @@
 #include "ui/aura/test/aura_test_context_factory.h"
 #include "ui/base/ui_base_features.h"
 
-#if defined(USE_OZONE)
-#include "services/ws/public/cpp/input_devices/input_device_client.h"
-#endif
-
 #if BUILDFLAG(ENABLE_MUS)
 #include "ui/aura/test/mus/test_window_tree_client_delegate.h"
 #include "ui/aura/test/mus/test_window_tree_client_setup.h"
 #endif
 
 namespace aura {
-namespace {
-
-#if defined(USE_OZONE)
-class TestInputDeviceClient : public ws::InputDeviceClient {
- public:
-  TestInputDeviceClient() = default;
-  ~TestInputDeviceClient() override = default;
-
-  using InputDeviceClient::GetIntefacePtr;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(TestInputDeviceClient);
-};
-#endif
-
-}  // namespace
 
 AuraTestSuiteSetup::AuraTestSuiteSetup() {
   DCHECK(!Env::HasInstance());
@@ -63,12 +43,11 @@ void AuraTestSuiteSetup::ConfigureMus() {
       test_window_tree_client_delegate_.get());
   env_->SetWindowTreeClient(window_tree_client_setup_->window_tree_client());
 
-#if defined(USE_OZONE)
-  input_device_client_ = std::make_unique<TestInputDeviceClient>();
-#endif
+#if !defined(USE_OZONE)
   context_factory_ = std::make_unique<test::AuraTestContextFactory>();
   env_->set_context_factory(context_factory_.get());
   env_->set_context_factory_private(nullptr);
+#endif
 }
 #endif
 

ui/aura/test/aura_test_suite_setup.h

@@ -14,10 +14,6 @@ namespace ui {
 class ContextFactory;
 }  // namespace ui
 
-namespace ws {
-class InputDeviceClient;
-}
-
 namespace aura {
 
 class Env;
@@ -48,10 +44,6 @@ class AuraTestSuiteSetup {
   std::unique_ptr<TestWindowTreeClientSetup> window_tree_client_setup_;
 #endif
 
-#if defined(USE_OZONE)
-  std::unique_ptr<ws::InputDeviceClient> input_device_client_;
-#endif
-
   DISALLOW_COPY_AND_ASSIGN(AuraTestSuiteSetup);
 };
 

ui/aura/test/aura_test_utils.cc

@@ -10,6 +10,14 @@
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/aura/window_tree_host.h"
 
+#if defined(USE_OZONE)
+#include "services/ws/public/cpp/input_devices/input_device_client.h"
+#include "ui/aura/env.h"
+#include "ui/base/ui_base_features.h"
+#else
+#include "ui/events/devices/input_device_manager.h"
+#endif
+
 namespace aura {
 namespace test {
 
@@ -48,5 +56,17 @@ void DisableIME(WindowTreeHost* host) {
   WindowTreeHostTestApi(host).disable_ime();
 }
 
+std::unique_ptr<ui::InputDeviceManager> CreateTestInputDeviceManager() {
+#if defined(USE_OZONE)
+  // Some tests may have already created an InputDeviceManager, e.g. through
+  // AshTestHelper. Some tests will not have created their Env yet, which may
+  // create an InputDeviceManager. So only create one if an Env has been created
+  // but it didn't create an InputDeviceManager.
+  if (aura::Env::HasInstance() && !ui::InputDeviceManager::HasInstance())
+    return std::make_unique<ws::InputDeviceClient>();
+#endif
+  return nullptr;
+}
+
 }  // namespace test
 }  // namespace aura

ui/aura/test/aura_test_utils.h

@@ -13,6 +13,10 @@ namespace gfx {
 class Point;
 }
 
+namespace ui {
+class InputDeviceManager;
+}
+
 namespace aura {
 class WindowEventDispatcher;
 class WindowTreeHost;
@@ -24,6 +28,8 @@ void SetHostDispatcher(WindowTreeHost* host,
                        std::unique_ptr<WindowEventDispatcher> dispatcher);
 void DisableIME(WindowTreeHost* host);
 
+std::unique_ptr<ui::InputDeviceManager> CreateTestInputDeviceManager();
+
 }  // namespace test
 }  // namespace aura
 

ui/events/devices/input_device_manager.cc

@@ -3,41 +3,35 @@
 // found in the LICENSE file.
 
 #include "ui/events/devices/input_device_manager.h"
-#include "base/lazy_instance.h"
-#include "base/threading/thread_local.h"
 
 namespace ui {
 namespace {
 
-// InputDeviceManager singleton is thread-local so that different instances can
-// be used on different threads (eg. UI Service thread vs. browser UI thread).
-base::LazyInstance<base::ThreadLocalPointer<InputDeviceManager>>::Leaky
-    lazy_tls_ptr = LAZY_INSTANCE_INITIALIZER;
+InputDeviceManager* g_instance = nullptr;
 
 }  // namespace
 
 // static
 InputDeviceManager* InputDeviceManager::GetInstance() {
-  InputDeviceManager* instance = lazy_tls_ptr.Pointer()->Get();
-  DCHECK(instance) << "InputDeviceManager::SetInstance must be called before "
+  DCHECK(g_instance) << "InputDeviceManager::SetInstance must be called before "
                         "getting the instance of InputDeviceManager.";
-  return instance;
+  return g_instance;
 }
 
 // static
 bool InputDeviceManager::HasInstance() {
-  return lazy_tls_ptr.Pointer()->Get() != nullptr;
+  return g_instance;
 }
 
 // static
 void InputDeviceManager::SetInstance(InputDeviceManager* instance) {
-  DCHECK(!lazy_tls_ptr.Pointer()->Get());
-  lazy_tls_ptr.Pointer()->Set(instance);
+  DCHECK(!g_instance);
+  g_instance = instance;
 }
 
 // static
 void InputDeviceManager::ClearInstance() {
-  lazy_tls_ptr.Pointer()->Set(nullptr);
+  g_instance = nullptr;
 }
 
 }  // namespace ui

ui/events/devices/input_device_manager.h

@@ -15,13 +15,13 @@
 
 namespace ui {
 
-// Interface to query available input devices. Holds a thread-local pointer to
-// an implementation that provides this service. The implementation could be
-// DeviceDataManager or something that mirrors the necessary state if
-// DeviceDataManager is in a different process.
+// Interface to query available input devices. The implementation, which is a
+// singleton, could be DeviceDataManager or something that mirrors the necessary
+// state if DeviceDataManager is in a different process.
 class EVENTS_DEVICES_EXPORT InputDeviceManager {
  public:
-  InputDeviceManager() {}
+  InputDeviceManager() = default;
+  virtual ~InputDeviceManager() = default;
 
   static InputDeviceManager* GetInstance();
   static bool HasInstance();

ui/views/controls/webview/webview_unittest.cc

@@ -17,6 +17,7 @@
 #include "content/public/test/mock_render_process_host.h"
 #include "content/public/test/test_browser_context.h"
 #include "content/public/test/test_browser_thread_bundle.h"
+#include "content/public/test/test_renderer_host.h"
 #include "content/public/test/web_contents_tester.h"
 #include "content/test/test_content_browser_client.h"
 #include "ui/events/event.h"
@@ -187,6 +188,7 @@ class WebViewUnitTest : public views::test::WidgetTest {
 
  private:
   content::TestBrowserThreadBundle test_browser_thread_bundle_;
+  content::RenderViewHostTestEnabler rvh_enabler_;
   std::unique_ptr<content::TestBrowserContext> browser_context_;
   content::TestContentBrowserClient test_browser_client_;
   std::unique_ptr<views::WebView::ScopedWebContentsCreatorForTesting>