Remove parts of //cc we aren't using

cc/blink/web_scroll_offset_animation_curve_impl.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 CC_BLINK_WEB_SCROLL_OFFSET_ANIMATION_CURVE_IMPL_H_
-#define CC_BLINK_WEB_SCROLL_OFFSET_ANIMATION_CURVE_IMPL_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "cc/blink/cc_blink_export.h"
-#include "third_party/WebKit/public/platform/WebScrollOffsetAnimationCurve.h"
-
-namespace cc {
-class AnimationCurve;
-class ScrollOffsetAnimationCurve;
-}
-
-namespace cc_blink {
-
-class WebScrollOffsetAnimationCurveImpl
-    : public blink::WebScrollOffsetAnimationCurve {
- public:
-  CC_BLINK_EXPORT WebScrollOffsetAnimationCurveImpl(
-      blink::WebFloatPoint target_value,
-      TimingFunctionType timing_function);
-  virtual ~WebScrollOffsetAnimationCurveImpl();
-
-  // blink::WebCompositorAnimationCurve implementation.
-  virtual AnimationCurveType type() const;
-
-  // blink::WebScrollOffsetAnimationCurve implementation.
-  virtual void setInitialValue(blink::WebFloatPoint initial_value);
-  virtual blink::WebFloatPoint getValue(double time) const;
-  virtual double duration() const;
-  virtual blink::WebFloatPoint targetValue() const;
-  virtual void updateTarget(double time, blink::WebFloatPoint new_target);
-
-  scoped_ptr<cc::AnimationCurve> CloneToAnimationCurve() const;
-
- private:
-  scoped_ptr<cc::ScrollOffsetAnimationCurve> curve_;
-
-  DISALLOW_COPY_AND_ASSIGN(WebScrollOffsetAnimationCurveImpl);
-};
-
-}  // namespace cc_blink
-
-#endif  // CC_BLINK_WEB_SCROLL_OFFSET_ANIMATION_CURVE_IMPL_H_