Experiment with more aggressive MSE GC on memory pressure

media/base/media_switches.h

Index: media/base/media_switches.h
diff --git a/media/base/media_switches.h b/media/base/media_switches.h
index 781e9270c6d47754ca93599766a5d014a86af65b..267950fd4d2689b943430133a1a42b3de1a91a5f 100644
--- a/media/base/media_switches.h
+++ b/media/base/media_switches.h
@@ -91,6 +91,8 @@ MEDIA_EXPORT extern const base::Feature kVideoColorManagement;
 MEDIA_EXPORT extern const base::Feature kVideoBlitColorAccuracy;
 MEDIA_EXPORT extern const base::Feature kExternalClearKeyForTesting;
 MEDIA_EXPORT extern const base::Feature kBackgroundVideoTrackOptimization;
+MEDIA_EXPORT extern const base::Feature kReduceMSEBuffersOnMemoryPressure;
+MEDIA_EXPORT extern const base::Feature kMSEInstantGCOnMemoryPressure;
 
 #if defined(OS_ANDROID)
 MEDIA_EXPORT extern const base::Feature kAndroidMediaPlayerRenderer;