Decouple performance() from LocalDOMWindow

Source/core/fetch/ResourceFetcher.cpp

Index: Source/core/fetch/ResourceFetcher.cpp
diff --git a/Source/core/fetch/ResourceFetcher.cpp b/Source/core/fetch/ResourceFetcher.cpp
index 9e7e218f82e0d0b7d7ac08e65d95c33ef5a97a94..ee37fab8dd31f2a89fbabbb18db0bcc786e8e86d 100644
--- a/Source/core/fetch/ResourceFetcher.cpp
+++ b/Source/core/fetch/ResourceFetcher.cpp
@@ -60,6 +60,7 @@
 #include "core/loader/SubstituteData.h"
 #include "core/loader/UniqueIdentifier.h"
 #include "core/loader/appcache/ApplicationCacheHost.h"
+#include "core/timing/DOMWindowPerformance.h"
 #include "core/timing/Performance.h"
 #include "core/timing/ResourceTimingInfo.h"
 #include "core/svg/graphics/SVGImageChromeClient.h"
@@ -198,8 +199,9 @@ static void reportResourceTiming(ResourceTimingInfo* info, Document* initiatorDo
         initiatorDocument = initiatorDocument->parentDocument();
     if (!initiatorDocument || !initiatorDocument->loader())
         return;
-    if (LocalDOMWindow* initiatorWindow = initiatorDocument->domWindow())
-        initiatorWindow->performance()->addResourceTiming(*info, initiatorDocument);
+    if (LocalDOMWindow* initiatorWindow = initiatorDocument->domWindow()) {
+        DOMWindowPerformance::performance(*initiatorWindow)->addResourceTiming(*info, initiatorDocument);
+    }

[Mike West, 2015/02/12 18:52:44]

Nit: You don't need {} for single-line clauses.

 }
 
 static WebURLRequest::RequestContext requestContextFromType(const ResourceFetcher* fetcher, Resource::Type type)