Re-introduce forward declaration of WebCompositorAnimation

cc/blink/web_animation_impl.cc

 // 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.
 
 #include "cc/blink/web_animation_impl.h"
 
 #include "cc/animation/animation.h"
 #include "cc/animation/animation_curve.h"
 #include "cc/animation/animation_id_provider.h"
 #include "cc/blink/web_filter_animation_curve_impl.h"
 #include "cc/blink/web_float_animation_curve_impl.h"
 #include "cc/blink/web_scroll_offset_animation_curve_impl.h"
 #include "cc/blink/web_transform_animation_curve_impl.h"
-#include "third_party/WebKit/public/platform/WebCompositorAnimation.h"
+#include "third_party/WebKit/public/platform/WebCompositorAnimationCurve.h"
 
 using cc::Animation;
 using cc::AnimationIdProvider;
 
 using blink::WebCompositorAnimation;
 using blink::WebCompositorAnimationCurve;
 
 namespace cc_blink {
 
 WebCompositorAnimationImpl::WebCompositorAnimationImpl(
@@ skipping 135 matching lines @@
     animation_->set_direction(cc::Animation::Normal);
 }
 #endif
 
 scoped_ptr<cc::Animation> WebCompositorAnimationImpl::PassAnimation() {
   animation_->set_needs_synchronized_start_time(true);
   return animation_.Pass();
 }
 
 }  // namespace cc_blink