[Android] A prototype of the interactive media notification.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index d1a5260ed8d53fe55cd41c6fe4a1c3374ea967dc..a815b0da3de1d7c5ef8c9dfb913d3aa6d1229e86 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -115,6 +115,7 @@
 #include "content/browser/android/content_video_view.h"
 #include "content/browser/android/date_time_chooser_android.h"
 #include "content/browser/android/media_players_observer.h"
+#include "content/browser/media/android/media_session.h"
 #include "content/browser/web_contents/web_contents_android.h"
 #endif
 
@@ -3265,6 +3266,33 @@ void WebContentsImpl::OnMediaPausedNotification(int64 player_cookie) {
   FOR_EACH_OBSERVER(WebContentsObserver, observers_, MediaPaused());
 }
 
+void WebContentsImpl::OnMediaSessionStateChanged() {
+#if defined(OS_ANDROID)
+  MediaSession* session = MediaSession::Get(this);
+  FOR_EACH_OBSERVER(WebContentsObserver, observers_,
+                    MediaSessionStateChanged(session->IsControllable(),
+                                             session->IsSuspended()));
+#else
+  NOTIMPLEMENTED();
+#endif
+}
+
+void WebContentsImpl::ResumeMediaSession() {
+#if defined(OS_ANDROID)
+  MediaSession::Get(this)->Resume();
+#else
+  NOTIMPLEMENTED();
+#endif
+}
+
+void WebContentsImpl::SuspendMediaSession() {
+#if defined(OS_ANDROID)
+  MediaSession::Get(this)->Suspend();
+#else
+  NOTIMPLEMENTED();
+#endif
+}
+
 void WebContentsImpl::OnFirstVisuallyNonEmptyPaint() {
   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                     DidFirstVisuallyNonEmptyPaint());