Fix an issue that MediaController is disaled when entering fullscreen

content/browser/android/content_video_view.cc

Index: content/browser/android/content_video_view.cc
diff --git a/content/browser/android/content_video_view.cc b/content/browser/android/content_video_view.cc
index 85f5719954fd4d50f77f1e02d70a0a408959ef5c..af3067a2094b4d2dc014125e7bd987948fa25dd1 100644
--- a/content/browser/android/content_video_view.cc
+++ b/content/browser/android/content_video_view.cc
@@ -6,6 +6,7 @@
 
 #include "base/command_line.h"
 #include "base/logging.h"
+#include "base/message_loop/message_loop.h"
 #include "content/browser/android/content_view_core_impl.h"
 #include "content/browser/media/android/browser_media_player_manager.h"
 #include "content/common/android/surface_texture_peer.h"
@@ -43,7 +44,8 @@ ContentVideoView* ContentVideoView::GetInstance() {
 ContentVideoView::ContentVideoView(
     BrowserMediaPlayerManager* manager)
     : manager_(manager),
-      fullscreen_state_(ENTERED) {
+      fullscreen_state_(ENTERED),
+      weak_factory_(this) {
   DCHECK(!g_content_video_view);
   j_content_video_view_ = CreateJavaObject();
   g_content_video_view = this;
@@ -108,8 +110,16 @@ void ContentVideoView::OnExitFullscreen() {
 void ContentVideoView::UpdateMediaMetadata() {
   JNIEnv *env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> content_video_view = GetJavaObject(env);
-  if (!content_video_view.is_null())
-    UpdateMediaMetadata(env, content_video_view.obj());
+  if (content_video_view.is_null())
+    return;
+
+  media::MediaPlayerAndroid* player = manager_->GetFullscreenPlayer();
+  if (player && player->IsPlayerReady()) {
+    Java_ContentVideoView_onUpdateMediaMetadata(
+        env, content_video_view.obj(), player->GetVideoWidth(),
+        player->GetVideoHeight(), player->GetDuration().InMilliseconds(),
+        player->CanPause(),player->CanSeekForward(), player->CanSeekBackward());
+  }
 }
 
 int ContentVideoView::GetVideoWidth(JNIEnv*, jobject obj) const {
@@ -187,13 +197,11 @@ void ContentVideoView::SetSurface(JNIEnv* env, jobject obj,
   }
 }
 
-void ContentVideoView::UpdateMediaMetadata(JNIEnv* env, jobject obj) {
-  media::MediaPlayerAndroid* player = manager_->GetFullscreenPlayer();
-  if (player && player->IsPlayerReady())
-    Java_ContentVideoView_onUpdateMediaMetadata(
-        env, obj, player->GetVideoWidth(), player->GetVideoHeight(),
-        player->GetDuration().InMilliseconds(), player->CanPause(),
-        player->CanSeekForward(), player->CanSeekBackward());
+void ContentVideoView::RequestMediaMetadata(JNIEnv* env, jobject obj) {
+  base::MessageLoop::current()->PostTask(
+      FROM_HERE,
+      base::Bind(&ContentVideoView::UpdateMediaMetadata,
+                 weak_factory_.GetWeakPtr()));
 }
 
 ScopedJavaLocalRef<jobject> ContentVideoView::GetJavaObject(JNIEnv* env) {