Fire visibilityChange event on out-of-process iframes.

content/renderer/render_frame_impl.h

 // Copyright 2013 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 CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 #define CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 25 matching lines @@
 #include "ipc/ipc_message.h"
 #include "ipc/ipc_platform_file.h"
 #include "media/blink/webmediaplayer_delegate.h"
 #include "media/blink/webmediaplayer_params.h"
 #include "services/shell/public/interfaces/connector.mojom.h"
 #include "services/shell/public/interfaces/interface_provider.mojom.h"
 #include "third_party/WebKit/public/platform/WebEffectiveConnectionType.h"
 #include "third_party/WebKit/public/platform/WebFocusType.h"
 #include "third_party/WebKit/public/platform/WebLoadingBehaviorFlag.h"
 #include "third_party/WebKit/public/platform/WebMediaPlayer.h"
+#include "third_party/WebKit/public/platform/WebPageVisibilityState.h"
 #include "third_party/WebKit/public/platform/modules/app_banner/WebAppBannerClient.h"
 #include "third_party/WebKit/public/web/WebAXObject.h"
 #include "third_party/WebKit/public/web/WebDataSource.h"
 #include "third_party/WebKit/public/web/WebFrameClient.h"
 #include "third_party/WebKit/public/web/WebFrameLoadType.h"
 #include "third_party/WebKit/public/web/WebFrameOwnerProperties.h"
 #include "third_party/WebKit/public/web/WebFrameSerializerClient.h"
 #include "third_party/WebKit/public/web/WebHistoryCommitType.h"
 #include "third_party/WebKit/public/web/WebMeaningfulLayout.h"
 #include "third_party/WebKit/public/web/WebScriptExecutionCallback.h"
@@ skipping 552 matching lines @@
                                const blink::WebURL& url,
                                const blink::WebString& title) override;
   void unregisterProtocolHandler(const blink::WebString& scheme,
                                  const blink::WebURL& url) override;
   blink::WebBluetooth* bluetooth() override;
   void checkIfAudioSinkExistsAndIsAuthorized(
       const blink::WebString& sink_id,
       const blink::WebSecurityOrigin& security_origin,
       blink::WebSetSinkIdCallbacks* web_callbacks) override;
   blink::ServiceRegistry* serviceRegistry() override;
+  blink::WebPageVisibilityState visibilityState() const override;
 
   // WebFrameSerializerClient implementation:
   void didSerializeDataForFrame(
       const blink::WebCString& data,
       blink::WebFrameSerializerClient::FrameSerializationStatus status)
       override;
 
   // Binds this render frame's service registry.
   void BindServiceRegistry(shell::mojom::InterfaceProviderRequest services,
                            shell::mojom::InterfaceProviderPtr exposed_services);
@@ skipping 34 matching lines @@
 
   // Indicates that the given instance is being destroyed. This is called from
   // the destructor, so it's important that the instance is not dereferenced
   // from this call.
   void PepperInstanceDeleted(PepperPluginInstanceImpl* instance);
 
   // Notification that the given plugin is focused or unfocused.
   void PepperFocusChanged(PepperPluginInstanceImpl* instance, bool focused);
 #endif  // ENABLE_PLUGINS
 
+  // Returns the current visibility of the WebView.
+  blink::WebPageVisibilityState GetVisibilityState() const override;

[kenrb, 2016/05/24 20:25:18]

This should be into the RenderFrame implementation block.

[lfg, 2016/05/24 23:33:50]

Done.

+
  protected:
   explicit RenderFrameImpl(const CreateParams& params);
 
  private:
   friend class RenderFrameImplTest;
   friend class RenderFrameObserver;
   friend class RendererAccessibilityTest;
   friend class TestRenderFrame;
   FRIEND_TEST_ALL_PREFIXES(ExternalPopupMenuDisplayNoneTest, SelectItem);
   FRIEND_TEST_ALL_PREFIXES(ExternalPopupMenuRemoveTest, RemoveOnChange);
@@ skipping 564 matching lines @@
 #endif
 
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_IMPL_H_