Drop V8RecursionScope dependency on ExecutionContext

Source/bindings/core/v8/ModuleProxy.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ModuleProxy_h
 #define ModuleProxy_h
 
+#include <v8.h>
+
 namespace blink {
 
 class ExecutionContext;
 
 // A proxy class to invoke functions implemented in bindings/modules
 // from bindings/core.
 class ModuleProxy {
 public:
     static ModuleProxy& moduleProxy();
 
-    void didLeaveScriptContextForRecursionScope(ExecutionContext&);
-    void registerDidLeaveScriptContextForRecursionScope(void (*didLeaveScriptContext)(ExecutionContext&));
+    void didLeaveScriptContextForRecursionScope(v8::Isolate*);
+    void registerDidLeaveScriptContextForRecursionScope(void (*didLeaveScriptContext)(v8::Isolate*));
 
 private:
     ModuleProxy() : m_didLeaveScriptContextForRecursionScope(0) { }
 
-    void (*m_didLeaveScriptContextForRecursionScope)(ExecutionContext&);
+    void (*m_didLeaveScriptContextForRecursionScope)(v8::Isolate*);
 };
 
 } // namespace blink
 
 #endif // ModuleProxy_h