Resource: helper class to prohibit {add,remove}Client() calls in scope

third_party/WebKit/Source/core/fetch/MockResourceClients.h

 /*
  * Copyright (c) 2013, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 26 matching lines @@
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class MockResourceClient : public GarbageCollectedFinalized<MockResourceClient>,
                            public ResourceClient {
   USING_PRE_FINALIZER(MockResourceClient, dispose);
   USING_GARBAGE_COLLECTED_MIXIN(MockResourceClient);
 
  public:
+  MockResourceClient() {}
   explicit MockResourceClient(Resource*);
   ~MockResourceClient() override;
 
   void notifyFinished(Resource*) override;
   String debugName() const override { return "MockResourceClient"; }
   virtual bool notifyFinishedCalled() const { return m_notifyFinishedCalled; }
 
   virtual void removeAsClient();
   virtual void dispose();
 
@@ skipping 23 matching lines @@
   int imageChangedCount() const { return m_imageChangedCount; }
 
  private:
   int m_imageChangedCount;
   int m_imageNotifyFinishedCount;
 };
 
 }  // namespace blink
 
 #endif  // MockResourceClients_h