[scheduler] Teach scheduler about audio state

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

Index: third_party/WebKit/Source/platform/scheduler/renderer/web_view_scheduler_impl.cc
diff --git a/third_party/WebKit/Source/platform/scheduler/renderer/web_view_scheduler_impl.cc b/third_party/WebKit/Source/platform/scheduler/renderer/web_view_scheduler_impl.cc
index 0dff1a2d6b38baccd3a8f9aa57ad7765673fa251..03d872381339a16661f784cefdc4ece9e00431b3 100644
--- a/third_party/WebKit/Source/platform/scheduler/renderer/web_view_scheduler_impl.cc
+++ b/third_party/WebKit/Source/platform/scheduler/renderer/web_view_scheduler_impl.cc
@@ -27,7 +27,8 @@ WebViewSchedulerImpl::WebViewSchedulerImpl(
       disable_background_timer_throttling_(disable_background_timer_throttling),
       allow_virtual_time_to_advance_(true),
       have_seen_loading_task_(false),
-      virtual_time_(false) {
+      virtual_time_(false),
+      is_audio_playing_(false) {
   renderer_scheduler->AddWebViewScheduler(this);
 }
 
@@ -141,6 +142,18 @@ void WebViewSchedulerImpl::setVirtualTimePolicy(VirtualTimePolicy policy) {
   }
 }
 
+void WebViewSchedulerImpl::OnAudioStateChangedInFrame() {
+  bool is_audio_playing = false;
+  for (WebFrameSchedulerImpl* frame_scheduler : frame_schedulers_) {
+    is_audio_playing = is_audio_playing || frame_scheduler->IsAudioPlaying();
+  }
+
+  if (is_audio_playing_ != is_audio_playing) {
+    is_audio_playing_ = is_audio_playing;
+    renderer_scheduler_->OnAudioStateChanged();
+  }
+}
+
 void WebViewSchedulerImpl::ApplyVirtualTimePolicy() {
   if (virtual_time_policy_ != VirtualTimePolicy::DETERMINISTIC_LOADING) {
     return;
@@ -154,5 +167,9 @@ void WebViewSchedulerImpl::ApplyVirtualTimePolicy() {
                                have_seen_loading_task_);
 }
 
+bool WebViewSchedulerImpl::IsAudioPlaying() const {
+  return is_audio_playing_;
+}
+
 }  // namespace scheduler
 }  // namespace blink