Support UseCounter in dedicated workers.

Source/core/frame/UseCounter.cpp

 
 /*
  * Copyright (C) 2012 Google, Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 17 matching lines @@
 #include "core/frame/UseCounter.h"
 
 #include "core/css/CSSStyleSheet.h"
 #include "core/css/StyleSheetContents.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/frame/DOMWindow.h"
 #include "core/frame/FrameConsole.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/LocalFrame.h"
+#include "core/workers/WorkerGlobalScope.h"
 #include "public/platform/Platform.h"
 
 namespace WebCore {
 
 static int totalPagesMeasuredCSSSampleId() { return 1; }
 
 int UseCounter::m_muteCount = 0;
 
 // FIXME : This mapping should be autogenerated. This function should
 //         be moved to a separate file and a script run at build time
@@ skipping 551 matching lines @@
     FrameHost* host = document.frameHost();
     if (!host)
         return;
 
     ASSERT(host->useCounter().deprecationMessage(feature).isEmpty());
     host->useCounter().recordMeasurement(feature);
 }
 
 void UseCounter::count(const ExecutionContext* context, Feature feature)
 {
-    if (!context || !context->isDocument())
+    if (!context)
         return;
-    count(*toDocument(context), feature);
+    if (context->isDocument()) {
+        count(*toDocument(context), feature);
+        return;
+    }
+    if (context->isWorkerGlobalScope())
+        toWorkerGlobalScope(context)->countFeature(feature);
 }
 
 void UseCounter::countDeprecation(ExecutionContext* context, Feature feature)
 {
     if (!context || !context->isDocument())
         return;
     UseCounter::countDeprecation(*toDocument(context), feature);
 }
 
 void UseCounter::countDeprecation(const DOMWindow* window, Feature feature)
@@ skipping 153 matching lines @@
 UseCounter* UseCounter::getFrom(const StyleSheetContents* sheetContents)
 {
     // FIXME: We may want to handle stylesheets that have multiple owners
     //        http://crbug.com/242125
     if (sheetContents && sheetContents->hasSingleOwnerNode())
         return getFrom(sheetContents->singleOwnerDocument());
     return 0;
 }
 
 } // namespace WebCore