Oilpan: Remove most WillBe types from the code base

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)
+MockImageResourceClient::MockImageResourceClient(RawPtr<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