Break Sky's dependency on cc

sky/viewer/cc/web_animation_curve_common.h

Index: sky/viewer/cc/web_animation_curve_common.h
diff --git a/sky/viewer/cc/web_animation_curve_common.h b/sky/viewer/cc/web_animation_curve_common.h
deleted file mode 100644
index 21c874856ecfc86da47d8effa50e77154d093eec..0000000000000000000000000000000000000000
--- a/sky/viewer/cc/web_animation_curve_common.h
+++ /dev/null
@@ -1,20 +0,0 @@
-// 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 SKY_VIEWER_CC_WEB_ANIMATION_CURVE_COMMON_H_
-#define SKY_VIEWER_CC_WEB_ANIMATION_CURVE_COMMON_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "sky/engine/public/platform/WebCompositorAnimationCurve.h"
-
-namespace cc {
-class TimingFunction;
-}
-
-namespace sky_viewer_cc {
-scoped_ptr<cc::TimingFunction> CreateTimingFunction(
-    blink::WebCompositorAnimationCurve::TimingFunctionType);
-}  // namespace sky_viewer_cc
-
-#endif  // SKY_VIEWER_CC_WEB_ANIMATION_CURVE_COMMON_H_