[scheduler] Teach scheduler about audio state

third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h

Index: third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
diff --git a/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h b/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
index 8ed9ef5107adadf6326f3be80f67021692e64fe7..94e9eeb3d296655f5e2584e7770e3929d2ecb336 100644
--- a/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
+++ b/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
@@ -8,6 +8,7 @@
 #include "base/atomicops.h"
 #include "base/macros.h"
 #include "base/synchronization/lock.h"
+#include "platform/scheduler/base/delayed_switch.h"
 #include "platform/scheduler/base/pollable_thread_safe_flag.h"
 #include "platform/scheduler/base/queueing_time_estimator.h"
 #include "platform/scheduler/base/thread_load_tracker.h"
@@ -101,6 +102,8 @@ class BLINK_PLATFORM_EXPORT RendererSchedulerImpl
   void DidAnimateForInputOnCompositorThread() override;
   void OnRendererBackgrounded() override;
   void OnRendererForegrounded() override;
+  void OnAudioStarted() override;
+  void OnAudioStopped() override;
   void SuspendRenderer() override;
   void AddPendingNavigation(WebScheduler::NavigatingFrameType type) override;
   void RemovePendingNavigation(WebScheduler::NavigatingFrameType type) override;
@@ -258,6 +261,9 @@ class BLINK_PLATFORM_EXPORT RendererSchedulerImpl
       base::TimeTicks optional_now) const;
   void CreateTraceEventObjectSnapshotLocked() const;
 
+  void OnAudioStartedImpl();
+  void OnAudioStoppedImpl();
+
   static bool ShouldPrioritizeInputEvent(const WebInputEvent& web_input_event);
 
   // The amount of time which idle periods can continue being scheduled when the
@@ -380,6 +386,7 @@ class BLINK_PLATFORM_EXPORT RendererSchedulerImpl
     IdleTimeEstimator idle_time_estimator;
     ThreadLoadTracker background_main_thread_load_tracker;
     ThreadLoadTracker foreground_main_thread_load_tracker;
+    DelayedSwitch audio_playback_switch;
     UseCase current_use_case;
     Policy current_policy;
     base::TimeTicks current_policy_expiration_time;