Expose performance.memory in workers

Source/core/timing/MemoryInfo.h

 /*
  * Copyright (C) 2010 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 20 matching lines @@
 #ifndef MemoryInfo_h
 #define MemoryInfo_h
 
 #include "bindings/v8/ScriptGCEvent.h"
 #include "bindings/v8/ScriptWrappable.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
-class Frame;
+class ExecutionContext;
 
 class MemoryInfo : public RefCounted<MemoryInfo>, public ScriptWrappable {
 public:
-    static PassRefPtr<MemoryInfo> create(Frame* frame) { return adoptRef(new MemoryInfo(frame)); }
+    static PassRefPtr<MemoryInfo> create(ExecutionContext* context) { return adoptRef(new MemoryInfo(context)); }
 
     size_t totalJSHeapSize() const { return m_info.totalJSHeapSize; }
     size_t usedJSHeapSize() const { return m_info.usedJSHeapSize; }
     size_t jsHeapSizeLimit() const { return m_info.jsHeapSizeLimit; }
 
 private:
-    explicit MemoryInfo(Frame*);
+    explicit MemoryInfo(ExecutionContext*);
+    void loadMemoryInfo(bool);
 
     HeapInfo m_info;
 };
 
 size_t quantizeMemorySize(size_t);
 
 } // namespace WebCore
 
 #endif // MemoryInfo_h