[scheduler] Teach scheduler about audio state

third_party/WebKit/Source/platform/scheduler/renderer/web_frame_scheduler_impl.cc

Index: third_party/WebKit/Source/platform/scheduler/renderer/web_frame_scheduler_impl.cc
diff --git a/third_party/WebKit/Source/platform/scheduler/renderer/web_frame_scheduler_impl.cc b/third_party/WebKit/Source/platform/scheduler/renderer/web_frame_scheduler_impl.cc
index 1fd96aeb5b86f08773944a9cbdf750ac3db5f5cd..3d979621f04cd30e13ce8f5977cd1609de4b2562 100644
--- a/third_party/WebKit/Source/platform/scheduler/renderer/web_frame_scheduler_impl.cc
+++ b/third_party/WebKit/Source/platform/scheduler/renderer/web_frame_scheduler_impl.cc
@@ -27,7 +27,8 @@ WebFrameSchedulerImpl::WebFrameSchedulerImpl(
       blame_context_(blame_context),
       frame_visible_(true),
       page_visible_(true),
-      cross_origin_(false) {}
+      cross_origin_(false),
+      is_audio_playing_(false) {}
 
 WebFrameSchedulerImpl::~WebFrameSchedulerImpl() {
   if (loading_task_queue_) {
@@ -140,6 +141,16 @@ void WebFrameSchedulerImpl::setPageVisible(bool page_visible) {
   UpdateTimerThrottling(was_throttled);
 }
 
+void WebFrameSchedulerImpl::audioStateChanged(bool is_audio_playing) {
+  is_audio_playing_ = is_audio_playing;
+  if (parent_web_view_scheduler_)
+    parent_web_view_scheduler_->OnAudioStateChangedInFrame();
+}
+
+bool WebFrameSchedulerImpl::IsAudioPlaying() const {
+  return is_audio_playing_;
+}
+
 bool WebFrameSchedulerImpl::ShouldThrottleTimers() const {
   if (!page_visible_)
     return true;