NOT FOR LANDING Implement WebMediaSession

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index c56c958e5218569e5c0efe62616cab93b254f0b6..631051072df4475b6f1722f9884c48cb5e35a626 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -169,8 +169,10 @@
 #include "content/renderer/android/synchronous_compositor_factory.h"
 #include "content/renderer/java/gin_java_bridge_dispatcher.h"
 #include "content/renderer/media/android/renderer_media_player_manager.h"
+#include "content/renderer/media/android/renderer_media_session_manager.h"
 #include "content/renderer/media/android/stream_texture_factory_impl.h"
 #include "content/renderer/media/android/webmediaplayer_android.h"
+#include "content/renderer/media/android/webmediasession_android.h"
 #else
 #include "cc/blink/context_provider_web_context.h"
 #endif
@@ -212,6 +214,7 @@ using blink::WebLocalFrame;
 using blink::WebMediaPlayer;
 using blink::WebMediaPlayerClient;
 using blink::WebMediaPlayerEncryptedMediaClient;
+using blink::WebMediaSession;
 using blink::WebNavigationPolicy;
 using blink::WebNavigationType;
 using blink::WebNode;
@@ -668,6 +671,7 @@ RenderFrameImpl::RenderFrameImpl(const CreateParams& params)
       midi_dispatcher_(NULL),
 #if defined(OS_ANDROID)
       media_player_manager_(NULL),
+      media_session_manager_(NULL),
 #endif
 #if defined(ENABLE_BROWSER_CDMS)
       cdm_manager_(NULL),
@@ -2068,6 +2072,16 @@ blink::WebMediaPlayer* RenderFrameImpl::createMediaPlayer(
 #endif  // defined(OS_ANDROID) && !defined(ENABLE_MEDIA_PIPELINE_ON_ANDROID)
 }
 
+blink::WebMediaSession* RenderFrameImpl::createMediaSession(
+    blink::WebLocalFrame* frame) {
+#if defined(OS_ANDROID)
+  return CreateAndroidWebMediaSession();
+#else
+  NOTREACHED();
+  return nullptr;
+#endif  // defined(OS_ANDROID)
+}
+
 blink::WebApplicationCacheHost* RenderFrameImpl::createApplicationCacheHost(
     blink::WebLocalFrame* frame,
     blink::WebApplicationCacheHostClient* client) {
@@ -4992,6 +5006,16 @@ RendererMediaPlayerManager* RenderFrameImpl::GetMediaPlayerManager() {
   return media_player_manager_;
 }
 
+WebMediaSession* RenderFrameImpl::CreateAndroidWebMediaSession() {
+  return new WebMediaSessionAndroid(GetMediaSessionManager());
+}
+
+RendererMediaSessionManager* RenderFrameImpl::GetMediaSessionManager() {
+  if (!media_session_manager_)
+    media_session_manager_ = new RendererMediaSessionManager(this);
+  return media_session_manager_;
+}
+
 #endif  // defined(OS_ANDROID)
 
 media::MediaPermission* RenderFrameImpl::GetMediaPermission() {