Implement MediaSession on top of the WebMediaPlayerDelegate.

media/blink/webmediaplayer_cast_android.cc

Index: media/blink/webmediaplayer_cast_android.cc
diff --git a/media/blink/webmediaplayer_cast_android.cc b/media/blink/webmediaplayer_cast_android.cc
index fc3de1cf4a06cdf704c9f428d6b36a2ef4cffd78..7f827f3ab8eae4a6809f70f006e6f80f5c528755 100644
--- a/media/blink/webmediaplayer_cast_android.cc
+++ b/media/blink/webmediaplayer_cast_android.cc
@@ -177,7 +177,7 @@ void WebMediaPlayerCast::Initialize(const GURL& url,
                                     blink::WebLocalFrame* frame) {
   player_manager_->Initialize(MEDIA_PLAYER_TYPE_REMOTE_ONLY, player_id_, url,
                               frame->document().firstPartyForCookies(), 0,
-                              frame->document().url(), true);
+                              frame->document().url(), true, webmediaplayer_);
   is_player_initialized_ = true;
 }
 
@@ -200,7 +200,9 @@ void WebMediaPlayerCast::requestRemotePlaybackControl() {
 void WebMediaPlayerCast::OnMediaMetadataChanged(base::TimeDelta duration,
                                                 int width,
                                                 int height,
-                                                bool success) {}
+                                                bool success) {
+  duration_ = duration;
+}
 
 void WebMediaPlayerCast::OnPlaybackComplete() {
   DVLOG(1) << __FUNCTION__;
@@ -249,8 +251,10 @@ void WebMediaPlayerCast::OnConnectedToRemoteDevice(
   is_remote_ = true;
   initializing_ = true;
   paused_ = false;
-  if (delegate_)
-    delegate_->DidPlay(webmediaplayer_);
+  if (delegate_) {
+    delegate_->DidPlay(webmediaplayer_, hasVideo(), false, is_remote_,
+                       GetDuration());
+  }
   client_->playbackStateChanged();
 
   remote_playback_message_ = remote_playback_message;
@@ -273,8 +277,10 @@ void WebMediaPlayerCast::play() {
   player_manager_->Start(player_id_);
   remote_time_at_ = base::TimeTicks::Now();
   paused_ = false;
-  if (delegate_)
-    delegate_->DidPlay(webmediaplayer_);
+  if (delegate_) {
+    delegate_->DidPlay(webmediaplayer_, hasVideo(), false, is_remote_,
+                       GetDuration());
+  }
 }
 
 void WebMediaPlayerCast::pause() {
@@ -291,7 +297,7 @@ void WebMediaPlayerCast::OnDisconnectedFromRemoteDevice() {
   if (!paused_) {
     paused_ = true;
     if (delegate_)
-      delegate_->DidPause(webmediaplayer_);
+      delegate_->DidPause(webmediaplayer_, false);
   }
   is_remote_ = false;
   double t = currentTime();
@@ -310,8 +316,10 @@ void WebMediaPlayerCast::OnMediaPlayerPlay() {
   initializing_ = false;
   if (is_remote_ && paused_) {
     paused_ = false;
-    if (paused_)
-      delegate_->DidPlay(webmediaplayer_);
+    if (delegate_) {
+      delegate_->DidPlay(webmediaplayer_, hasVideo(), false, is_remote_,
+                         GetDuration());
+    }
     remote_time_at_ = base::TimeTicks::Now();
     client_->playbackStateChanged();
   }
@@ -325,7 +333,7 @@ void WebMediaPlayerCast::OnMediaPlayerPause() {
   if (is_remote_ && !paused_) {
     paused_ = true;
     if (delegate_)
-      delegate_->DidPause(webmediaplayer_);
+      delegate_->DidPause(webmediaplayer_, false);
     client_->playbackStateChanged();
   }
 }
@@ -385,4 +393,12 @@ scoped_refptr<VideoFrame> WebMediaPlayerCast::GetCastingBanner() {
                               base::Bind(&GLCBShim, context_3d_cb_));
 }
 
+base::TimeDelta WebMediaPlayerCast::GetDuration() {
+  const double duration = webmediaplayer_->duration();
+  if (duration == std::numeric_limits<double>::infinity())
+    return kInfiniteDuration();
+
+  return std::max(duration_, base::TimeDelta::FromSecondsD(duration));
+}
+
 }  // namespace media