blink: Cleanup core class forward declarations

third_party/WebKit/Source/core/animation/TimingInput.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 TimingInput_h
 #define TimingInput_h
 
 #include "core/CoreExport.h"
 #include "core/animation/Timing.h"
 #include "wtf/Allocator.h"
 
 namespace blink {
 
-class Dictionary;
 class Document;
 class ExceptionState;
 class KeyframeEffectOptions;
 class UnrestrictedDoubleOrString;
 
 class CORE_EXPORT TimingInput {
   STATIC_ONLY(TimingInput);
 
  public:
   static bool convert(const KeyframeEffectOptions& timingInput,
@@ skipping 18 matching lines @@
   static void setPlaybackDirection(Timing&, const String& direction);
   static bool setTimingFunction(Timing&,
                                 const String& timingFunctionString,
                                 Document*,
                                 ExceptionState&);
 };
 
 }  // namespace blink
 
 #endif