Plumb audio focus support for spitzer clients.

content/renderer/media/android/webmediaplayer_android.h

Index: content/renderer/media/android/webmediaplayer_android.h
diff --git a/content/renderer/media/android/webmediaplayer_android.h b/content/renderer/media/android/webmediaplayer_android.h
index 51ba4af1b3cc3fbf820774b6f55e37bba5502a87..fa13ce849ff78207d8eced1de7aeea9ad01161fc 100644
--- a/content/renderer/media/android/webmediaplayer_android.h
+++ b/content/renderer/media/android/webmediaplayer_android.h
@@ -29,6 +29,7 @@
 #include "media/base/demuxer_stream.h"
 #include "media/base/media_keys.h"
 #include "media/base/time_delta_interpolator.h"
+#include "media/blink/webmediaplayer_delegate.h"
 #include "media/blink/webmediaplayer_params.h"
 #include "media/cdm/proxy_decryptor.h"
 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
@@ -66,7 +67,6 @@ class CdmFactory;
 class MediaLog;
 class MediaPermission;
 class WebContentDecryptionModuleImpl;
-class WebMediaPlayerDelegate;
 }
 
 namespace content {
@@ -78,10 +78,12 @@ class RendererMediaPlayerManager;
 // media player in the browser process. It listens to all the status changes
 // sent from the browser process and sends playback controls to the media
 // player.
-class WebMediaPlayerAndroid : public blink::WebMediaPlayer,
-                              public cc::VideoFrameProvider,
-                              public RenderFrameObserver,
-                              public StreamTextureFactoryContextObserver {
+class WebMediaPlayerAndroid
+    : public blink::WebMediaPlayer,
+      public cc::VideoFrameProvider,
+      public RenderFrameObserver,
+      public NON_EXPORTED_BASE(media::WebMediaPlayerDelegate::Observer),
+      public StreamTextureFactoryContextObserver {
  public:
   // Construct a WebMediaPlayerAndroid object. This class communicates with the
   // MediaPlayerAndroid object in the browser process through |proxy|.
@@ -269,6 +271,13 @@ class WebMediaPlayerAndroid : public blink::WebMediaPlayer,
   // is not available.
   void OnWaitingForDecryptionKey();
 
+  // WebMediaPlayerDelegate::Observer implementation.
+  blink::WebMediaPlayer* GetPlayer() override;
+  void OnHidden() override;
+  void OnShown() override;
+  void OnPlay() override;
+  void OnPause() override;
+
  protected:
   // Helper method to update the playing state.
   void UpdatePlayingState(bool is_playing_);