Move ImageSerializationProcessor code to blimp/client/core

blimp/client/feature/compositor/blob_image_serialization_processor.h

-// Copyright 2016 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 BLIMP_CLIENT_FEATURE_COMPOSITOR_BLOB_IMAGE_SERIALIZATION_PROCESSOR_H_
-#define BLIMP_CLIENT_FEATURE_COMPOSITOR_BLOB_IMAGE_SERIALIZATION_PROCESSOR_H_
-
-#include <memory>
-
-#include "base/macros.h"
-#include "base/memory/singleton.h"
-#include "cc/blimp/image_serialization_processor.h"
-#include "third_party/skia/include/core/SkPicture.h"
-
-class SkPixelSerializer;
-
-namespace blimp {
-
-class BlobChannelReceiver;
-
-namespace client {
-
-// Adds BlobChannel image retrieval support to the Skia image decoding process,
-// in addition to providing a cache for Skia images.
-class BlobImageSerializationProcessor : public cc::ImageSerializationProcessor {
- public:
-  class ErrorDelegate {
-   public:
-    virtual void OnImageDecodeError() = 0;
-  };
-
-  // Returns the BlobImageSerializationProcessor* instance that is active
-  // for the current process.
-  static BlobImageSerializationProcessor* current();
-
-  BlobImageSerializationProcessor();
-  ~BlobImageSerializationProcessor() override;
-
-  // Sets the |blob_receiver| to use for reading images.
-  // |blob_receiver| must outlive |this|.
-  void set_blob_receiver(BlobChannelReceiver* blob_receiver) {
-    blob_receiver_ = blob_receiver;
-  }
-
-  // |error_delegate| must outlive this.
-  void set_error_delegate(ErrorDelegate* error_delegate) {
-    error_delegate_ = error_delegate;
-  }
-
-  // Retrieves a bitmap with ID |input| from |blob_receiver_| and decodes it
-  // to |bitmap|.
-  bool GetAndDecodeBlob(const void* input,
-                        size_t input_size,
-                        SkBitmap* bitmap) const;
-
- private:
-  friend struct base::DefaultSingletonTraits<BlobImageSerializationProcessor>;
-
-  // Adapts a bare function pointer call to a singleton call to
-  // GetAndDecodeBlob() call on the current() processor.
-  static bool InstallPixelRefProc(const void* input,
-                                  size_t input_size,
-                                  SkBitmap* bitmap);
-
-  // cc:ImageSerializationProcessor implementation.
-  std::unique_ptr<cc::EnginePictureCache> CreateEnginePictureCache() override;
-  std::unique_ptr<cc::ClientPictureCache> CreateClientPictureCache() override;
-
-  // Interface for accessing stored images received over the Blob Channel.
-  BlobChannelReceiver* blob_receiver_ = nullptr;
-
-  ErrorDelegate* error_delegate_ = nullptr;
-
-  // Pointer is bound on object construction, and set to nullptr on object
-  // deletion. Only one BlobImageSerializationProcessor may be live at a time.
-  static BlobImageSerializationProcessor* current_instance_;
-
-  DISALLOW_COPY_AND_ASSIGN(BlobImageSerializationProcessor);
-};
-
-}  // namespace client
-}  // namespace blimp
-
-#endif  // BLIMP_CLIENT_FEATURE_COMPOSITOR_BLOB_IMAGE_SERIALIZATION_PROCESSOR_H_