Move //sky/compositor to //sky/viewer/compositor

sky/compositor/picture_serializer.cc

-// 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.
-
-#include "sky/compositor/picture_serializer.h"
-
-#include "third_party/skia/include/core/SkData.h"
-#include "third_party/skia/include/core/SkPixelSerializer.h"
-#include "third_party/skia/include/core/SkStream.h"
-#include "ui/gfx/codec/png_codec.h"
-
-namespace sky {
-
-class PngPixelSerializer : public SkPixelSerializer {
- public:
-  bool onUseEncodedData(const void*, size_t) override { return true; }
-  SkData* onEncodePixels(const SkImageInfo& info, const void* pixels,
-      size_t row_bytes) override {
-    std::vector<unsigned char> data;
-
-    SkBitmap bm;
-    if (!bm.installPixels(info, const_cast<void*>(pixels), row_bytes))
-      return nullptr;
-    if (!gfx::PNGCodec::EncodeBGRASkBitmap(bm, false, &data))
-      return nullptr;
-    return SkData::NewWithCopy(&data.front(), data.size());
-  }
-};
-
-void SerializePicture(const char* file_name, SkPicture* picture) {
-  SkFILEWStream stream(file_name);
-  PngPixelSerializer serializer;
-  picture->serialize(&stream, &serializer);
-}
-
-}  // namespace sky