mus: Make --use-mus-in-renderer the default for --mash.

content/public/common/content_switches.h

Index: content/public/common/content_switches.h
diff --git a/content/public/common/content_switches.h b/content/public/common/content_switches.h
index e2d66533883fbe4710a001f9ac60f74fdb31b43f..2058361212a3ea7d15f751d95d9f0603da67b64d 100644
--- a/content/public/common/content_switches.h
+++ b/content/public/common/content_switches.h
@@ -201,6 +201,7 @@ CONTENT_EXPORT extern const char kMojoLocalStorage[];
 CONTENT_EXPORT extern const char kMuteAudio[];
 CONTENT_EXPORT extern const char kNoReferrers[];
 CONTENT_EXPORT extern const char kNoSandbox[];
+CONTENT_EXPORT extern const char kNoUseMusInRenderer[];
 CONTENT_EXPORT extern const char kNoZygote[];
 CONTENT_EXPORT extern const char kEnableAppContainer[];
 CONTENT_EXPORT extern const char kDisableAppContainer[];
@@ -247,7 +248,6 @@ CONTENT_EXPORT extern const char kTouchEventFeatureDetectionDisabled[];
 CONTENT_EXPORT extern const char kTouchTextSelectionStrategy[];
 CONTENT_EXPORT extern const char kUIPrioritizeInGpuProcess[];
 CONTENT_EXPORT extern const char kUseFakeUIForMediaStream[];
-CONTENT_EXPORT extern const char kUseMusInRenderer[];
 CONTENT_EXPORT extern const char kContentImageTextureTarget[];
 CONTENT_EXPORT extern const char kVideoImageTextureTarget[];
 CONTENT_EXPORT extern const char kUseMobileUserAgent[];