[scheduler] Teach scheduler about audio state

content/renderer/render_thread_impl.cc

 // Copyright (c) 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/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <utility>
@@ skipping 1719 matching lines @@
   ChildThreadImpl::OnProcessBackgrounded(backgrounded);
 
   if (backgrounded) {
     renderer_scheduler_->OnRendererBackgrounded();
   } else {
     renderer_scheduler_->OnRendererForegrounded();
     is_renderer_suspended_ = false;
   }
 }
 
+void RenderThreadImpl::OnAudioStateChanged(bool has_active_audio) {
+  ChildThreadImpl::OnAudioStateChanged(has_active_audio);
+
+  if (has_active_audio) {
+    renderer_scheduler_->OnAudioStarted();
+  } else {
+    renderer_scheduler_->OnAudioStopped();
+  }
+}
+
 void RenderThreadImpl::OnProcessPurgeAndSuspend() {
   ChildThreadImpl::OnProcessPurgeAndSuspend();
   if (is_renderer_suspended_)
     return;
   // TODO(hajimehoshi): Implement purging e.g. cache (crbug/607077)
   is_renderer_suspended_ = true;
   renderer_scheduler_->SuspendRenderer();
 }
 
 void RenderThreadImpl::OnCreateNewFrame(FrameMsg_NewFrame_Params params) {
@@ skipping 546 matching lines @@
   if (blink::mainThreadIsolate()) {
     blink::mainThreadIsolate()->MemoryPressureNotification(
         v8::MemoryPressureLevel::kCritical);
     blink::MemoryPressureNotificationToWorkerThreadIsolates(
         v8::MemoryPressureLevel::kCritical);
   }
 }
 
 
 }  // namespace content