Experiment with more aggressive MSE GC on memory pressure

media/blink/webmediaplayer_params.h

Index: media/blink/webmediaplayer_params.h
diff --git a/media/blink/webmediaplayer_params.h b/media/blink/webmediaplayer_params.h
index 54ab539d05d6f9b6b3bb475e0ab624d004ef1854..788532282678bff1cc3daf4610e7880d09805506 100644
--- a/media/blink/webmediaplayer_params.h
+++ b/media/blink/webmediaplayer_params.h
@@ -59,7 +59,8 @@ class MEDIA_BLINK_EXPORT WebMediaPlayerParams {
       blink::WebContentDecryptionModule* initial_cdm,
       SurfaceManager* surface_manager,
       base::WeakPtr<MediaObserver> media_observer,
-      base::TimeDelta max_keyframe_distance_to_disable_background_video);
+      base::TimeDelta max_keyframe_distance_to_disable_background_video,
+      bool mse_force_gc_on_memory_pressure);
 
   ~WebMediaPlayerParams();
 
@@ -107,6 +108,10 @@ class MEDIA_BLINK_EXPORT WebMediaPlayerParams {
     return max_keyframe_distance_to_disable_background_video_;
   }
 
+  bool mse_force_gc_on_memory_pressure() const {
+    return mse_force_gc_on_memory_pressure_;
+  }
+
  private:
   DeferLoadCB defer_load_cb_;
   scoped_refptr<SwitchableAudioRendererSink> audio_renderer_sink_;
@@ -121,6 +126,7 @@ class MEDIA_BLINK_EXPORT WebMediaPlayerParams {
   SurfaceManager* surface_manager_;
   base::WeakPtr<MediaObserver> media_observer_;
   base::TimeDelta max_keyframe_distance_to_disable_background_video_;
+  bool mse_force_gc_on_memory_pressure_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(WebMediaPlayerParams);
 };