[Android] Decouple pausing video from RenderView pause.

content/browser/android/content_view_core_impl.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/android/content_view_core_impl.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
@@ skipping 324 matching lines @@
 
 void ContentViewCoreImpl::Show() {
   GetWebContents()->WasShown();
   // Displaying WebContents may trigger a lazy reload, spawning a new renderer
   // for the tab.
   UpdateTabCrashedFlag();
 }
 
 void ContentViewCoreImpl::Hide() {
   GetWebContents()->WasHidden();
+  PauseVideo();
+}
+
+void ContentViewCoreImpl::PauseVideo() {
+  RenderViewHost* host = web_contents_->GetRenderViewHost();
+  if (host)
+    host->Send(new ViewMsg_PauseVideo(host->GetRoutingID()));
 }
 
 void ContentViewCoreImpl::OnTabCrashed() {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
   if (obj.is_null())
     return;
   Java_ContentViewCore_resetVSyncNotification(env, obj.obj());
 
   // If |tab_crashed_| is already true, just return. e.g. if two tabs share the
@@ skipping 1247 matching lines @@
       reinterpret_cast<ui::ViewAndroid*>(view_android),
       reinterpret_cast<ui::WindowAndroid*>(window_android));
   return reinterpret_cast<jint>(view);
 }
 
 bool RegisterContentViewCore(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace content