cc: Remove all blimp code from cc.

cc/proto/skia_conversions.h

-// Copyright 2015 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_PROTO_SKIA_CONVERSIONS_H_
-#define CC_PROTO_SKIA_CONVERSIONS_H_
-
-#include "cc/base/cc_export.h"
-#include "cc/proto/skclipop.pb.h"
-#include "cc/proto/skxfermode.pb.h"
-#include "third_party/skia/include/core/SkBlendMode.h"
-#include "third_party/skia/include/core/SkClipOp.h"
-
-class SkRRect;
-
-namespace cc {
-
-namespace proto {
-class SkRRect;
-}
-
-// TODO(dtrainor): Move these to a class and make them static
-// (crbug.com/548432).
-CC_EXPORT SkBlendMode SkXfermodeModeFromProto(proto::SkXfermode::Mode mode);
-CC_EXPORT proto::SkXfermode::Mode SkXfermodeModeToProto(SkBlendMode mode);
-
-CC_EXPORT void SkRRectToProto(const SkRRect& rect, proto::SkRRect* proto);
-CC_EXPORT SkRRect ProtoToSkRRect(const proto::SkRRect& proto);
-
-}  // namespace cc
-
-#endif  // CC_PROTO_SKIA_CONVERSIONS_H_