Cleanup v8 usage in bindings

Source/bindings/v8/V8RecursionScope.h

 /*
  * Copyright (C) 2011 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 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef V8RecursionScope_h
 #define V8RecursionScope_h
 
 #include "bindings/v8/V8PerIsolateData.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/dom/ScriptForbiddenScope.h"
 #include "wtf/Noncopyable.h"
+#include <v8.h>
 
 namespace WebCore {
 
 // C++ calls into script contexts which are "owned" by WebKit (created in a
 // process where WebKit.cpp initializes v8) must declare their type:
 //
 //   1. Calls into page/author script from a frame
 //   2. Calls into page/author script from a worker
 //   3. Calls into internal script (typically setup/teardown work)
 //
@@ skipping 68 matching lines @@
 private:
     void didLeaveScriptContext();
 
     v8::Isolate* m_isolate;
     ExecutionContext& m_executionContext;
 };
 
 } // namespace WebCore
 
 #endif // V8RecursionScope_h