Add a status code to install event handled message from Service Worker

content/common/DEPS

 include_rules = [
   "+media/audio",
   "+media/base",
   "-webkit/browser",
   "-webkit/child",
   "-webkit/renderer",
 
   # No inclusion of WebKit from the browser, other than strictly enum/POD,
   # header-only types, and some selected common code.
   "-third_party/WebKit",
   "+third_party/WebKit/public/platform/WebCString.h",
   "+third_party/WebKit/public/platform/WebDeviceMotionData.h",
   "+third_party/WebKit/public/platform/WebDeviceOrientationData.h",
   "+third_party/WebKit/public/platform/WebFloatPoint.h",
   "+third_party/WebKit/public/platform/WebFloatRect.h",
   "+third_party/WebKit/public/platform/WebGamepads.h",
   "+third_party/WebKit/public/platform/WebGraphicsContext3D.h",
   "+third_party/WebKit/public/platform/WebHTTPBody.h",
   "+third_party/WebKit/public/platform/WebIDBCursor.h",
   "+third_party/WebKit/public/platform/WebIDBDatabase.h",
   "+third_party/WebKit/public/platform/WebIDBTypes.h",
   "+third_party/WebKit/public/platform/WebReferrerPolicy.h",
   "+third_party/WebKit/public/platform/WebScreenOrientation.h",
   "+third_party/WebKit/public/platform/WebScreenInfo.h",
   "+third_party/WebKit/public/platform/WebServiceWorkerError.h",
+  "+third_party/WebKit/public/platform/WebServiceWorkerEventResult.h",

[tkent, 2014/03/28 00:49:47]

This is a simple enum header.  lgtm.

   "+third_party/WebKit/public/platform/WebStorageArea.h",
   "+third_party/WebKit/public/platform/WebString.h",
   "+third_party/WebKit/public/platform/linux/WebFontFamily.h",
   "+third_party/WebKit/public/platform/linux/WebFontRenderStyle.h",
   "+third_party/WebKit/public/web/mac/WebScrollbarTheme.h",
   "+third_party/WebKit/public/web/WebAXEnums.h",
   "+third_party/WebKit/public/web/WebCompositionUnderline.h",
   "+third_party/WebKit/public/web/WebContentSecurityPolicy.h",
   "+third_party/WebKit/public/web/WebDragOperation.h",
   "+third_party/WebKit/public/web/WebDragStatus.h",
   "+third_party/WebKit/public/web/WebFindOptions.h",
   "+third_party/WebKit/public/web/WebInputEvent.h",
   "+third_party/WebKit/public/web/WebMediaPlayerAction.h",
   "+third_party/WebKit/public/web/WebPageVisibilityState.h",
   "+third_party/WebKit/public/web/WebPluginAction.h",
   "+third_party/WebKit/public/web/WebPopupType.h",
   "+third_party/WebKit/public/web/WebTextDirection.h",
   "+third_party/WebKit/public/web/WebWindowFeatures.h",
 ]
 
 specific_include_rules = {
 # Java bridge code passes NPAPI types to the browser process. Crazy!
   "java_bridge_messages\.h": [
     "+content/child"
   ]
 }