Rename NoEventDispatchAssertion to EventDispatchForbiddenScope and move it to platform/

Source/platform/EventDispatchForbiddenScope.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 NoEventDispatchAssertion_h
-#define NoEventDispatchAssertion_h
+#ifndef EventDispatchForbiddenScope_h
+#define EventDispatchForbiddenScope_h
 
 #include "wtf/MainThread.h"
 #include "wtf/TemporaryChange.h"
 
 namespace blink {
 
 #if ENABLE(ASSERT)
 
-class NoEventDispatchAssertion {
+class EventDispatchForbiddenScope {
 public:
-    NoEventDispatchAssertion()
+    EventDispatchForbiddenScope()
     {
         if (!isMainThread())
             return;
         ++s_count;
     }
 
-    ~NoEventDispatchAssertion()
+    ~EventDispatchForbiddenScope()
     {
         if (!isMainThread())
             return;
         ASSERT(s_count);
         --s_count;
     }
 
     static bool isEventDispatchForbidden()
     {
         if (!isMainThread())
@@ skipping 15 matching lines @@
 
         TemporaryChange<unsigned> m_change;
     };
 
 private:
     static unsigned s_count;
 };
 
 #else
 
-class NoEventDispatchAssertion {
+class EventDispatchForbiddenScope {
 public:
-    NoEventDispatchAssertion() { }
+    EventDispatchForbiddenScope() { }
 
     class AllowUserAgentEvents {
     public:
         AllowUserAgentEvents() { }
     };
 };
 
 #endif // ENABLE(ASSERT)
 
 } // namespace blink
 
-#endif // NoEventDispatchAssertion_h
+#endif // EventDispatchForbiddenScope_h