Replace MockImageResourceClient with MockImageResourceObserver

third_party/WebKit/Source/core/loader/resource/MockImageResourceClient.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 MockImageResourceClient_h
-#define MockImageResourceClient_h
-
-#include "core/fetch/MockResourceClient.h"
-#include "core/loader/resource/ImageResource.h"
-#include "core/loader/resource/ImageResourceContent.h"
-#include "core/loader/resource/ImageResourceObserver.h"
-
-namespace blink {
-
-class MockImageResourceClient final : public MockResourceClient,
-                                      public ImageResourceObserver {
- public:
-  explicit MockImageResourceClient(ImageResource*);
-  ~MockImageResourceClient() override;
-
-  void imageNotifyFinished(ImageResourceContent*) override;
-  void imageChanged(ImageResourceContent*, const IntRect*) override;
-
-  String debugName() const override { return "MockImageResourceClient"; }
-
-  bool notifyFinishedCalled() const override;
-
-  void removeAsClient() override;
-  void dispose() override;
-
-  int imageChangedCount() const { return m_imageChangedCount; }
-  int imageNotifyFinishedCount() const { return m_imageNotifyFinishedCount; }
-
-  size_t encodedSizeOnLastImageChanged() const {
-    return m_encodedSizeOnLastImageChanged;
-  }
-  size_t encodedSizeOnImageNotifyFinished() const {
-    return m_encodedSizeOnImageNotifyFinished;
-  }
-
- private:
-  int m_imageChangedCount;
-  size_t m_encodedSizeOnLastImageChanged;
-  int m_imageNotifyFinishedCount;
-  size_t m_encodedSizeOnImageNotifyFinished;
-};
-
-}  // namespace blink
-
-#endif  // MockImageResourceClient_h