Use the serviceworker with mojo by default

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 62afcfc16c33432232711f607b8357df0c8b30f3..f2a68689747d7eb5c34ecb1c2523af4ee50ed890 100644
--- a/content/public/common/content_switches.h
+++ b/content/public/common/content_switches.h
@@ -72,6 +72,7 @@ CONTENT_EXPORT extern const char kDisablePreferCompositingToLCDText[];
 CONTENT_EXPORT extern const char kDisableKillAfterBadIPC[];
 CONTENT_EXPORT extern const char kDisableLocalStorage[];
 CONTENT_EXPORT extern const char kDisableLogging[];
+CONTENT_EXPORT extern const char kDisableMojoServiceWorker[];
 CONTENT_EXPORT extern const char kDisableNamespaceSandbox[];
 CONTENT_EXPORT extern const char kDisableNativeGpuMemoryBuffers[];
 CONTENT_EXPORT extern const char kDisableNotifications[];
@@ -194,7 +195,6 @@ CONTENT_EXPORT extern const char kMHTMLGeneratorOption[];
 CONTENT_EXPORT extern const char kMHTMLSkipNostoreMain[];
 CONTENT_EXPORT extern const char kMHTMLSkipNostoreAll[];
 CONTENT_EXPORT extern const char kMojoLocalStorage[];
-CONTENT_EXPORT extern const char kMojoServiceWorker[];
 CONTENT_EXPORT extern const char kMuteAudio[];
 CONTENT_EXPORT extern const char kNoReferrers[];
 CONTENT_EXPORT extern const char kNoSandbox[];