blink: Cleanup core class forward declarations

third_party/WebKit/Source/core/testing/CallbackFunctionTest.h

 // Copyright 2016 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 CallbackFunctionTest_h
 #define CallbackFunctionTest_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Vector.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class ExceptionState;
 class HTMLDivElement;
-class ScriptState;
 class TestCallback;
 class TestInterfaceCallback;
 class TestReceiverObjectCallback;
 class TestSequenceCallback;
 
 class CallbackFunctionTest final
     : public GarbageCollected<CallbackFunctionTest>,
       public ScriptWrappable {
   DEFINE_WRAPPERTYPEINFO();
 
@@ skipping 11 matching lines @@
                              ExceptionState&);
   void testReceiverObjectCallback(TestReceiverObjectCallback*, ExceptionState&);
   Vector<String> testSequenceCallback(TestSequenceCallback*,
                                       const Vector<int>& numbers,
                                       ExceptionState&);
 };
 
 }  // namespace blink
 
 #endif  // CallbackFunctionTest_h