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 a39b6a6073f81cb65726b41a3b602e8ea8f4d2d9..00aa774b2ea151bc8232280475077a7e41ab675e 100644
--- a/media/blink/webmediaplayer_params.h
+++ b/media/blink/webmediaplayer_params.h
@@ -60,6 +60,7 @@ class MEDIA_BLINK_EXPORT WebMediaPlayerParams {
       SurfaceManager* surface_manager,
       base::WeakPtr<MediaObserver> media_observer,
       base::TimeDelta max_keyframe_distance_to_disable_background_video,
+      bool enable_instant_source_buffer_gc,
       bool allow_suspend);
 
   ~WebMediaPlayerParams();
@@ -108,6 +109,10 @@ class MEDIA_BLINK_EXPORT WebMediaPlayerParams {
     return max_keyframe_distance_to_disable_background_video_;
   }
 
+  bool enable_instant_source_buffer_gc() const {
+    return enable_instant_source_buffer_gc_;
+  }
+
   bool allow_suspend() const { return allow_suspend_; }
 
  private:
@@ -124,6 +129,7 @@ class MEDIA_BLINK_EXPORT WebMediaPlayerParams {
   SurfaceManager* surface_manager_;
   base::WeakPtr<MediaObserver> media_observer_;
   base::TimeDelta max_keyframe_distance_to_disable_background_video_;
+  bool enable_instant_source_buffer_gc_;
   const bool allow_suspend_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(WebMediaPlayerParams);