Split ImageResourceClient into ResourceClient and ImageResourceObserver [1/2]

third_party/WebKit/Source/core/fetch/MockImageResourceClient.cpp

-// 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 "core/fetch/MockImageResourceClient.h"
-
-#include "core/fetch/ImageResource.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace blink {
-
-MockImageResourceClient::MockImageResourceClient(PassRefPtrWillBeRawPtr<Resource> resource)
-    : m_resource(resource.get())
-    , m_imageChangedCount(0)
-    , m_notifyFinishedCalled(false)
-{
-    m_resource->addClient(this);
-}
-
-MockImageResourceClient::~MockImageResourceClient()
-{
-    if (m_resource)
-        m_resource->removeClient(this);
-}
-
-void MockImageResourceClient::notifyFinished(Resource*)
-{
-    ASSERT_FALSE(m_notifyFinishedCalled);
-    m_notifyFinishedCalled = true;
-}
-
-void MockImageResourceClient::removeAsClient()
-{
-    m_resource->removeClient(this);
-    m_resource = nullptr;
-}
-
-} // namespace blink