ResourceFetcherTest: introduce FetchTestingPlatformSupport

third_party/WebKit/Source/platform/testing/TestingPlatformSupport.h

 /*
  * Copyright (C) 2014 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 96 matching lines @@
   WebBlobRegistry* getBlobRegistry() override;
   WebClipboard* clipboard() override;
   WebFileUtilities* fileUtilities() override;
   WebIDBFactory* idbFactory() override;
   WebURLLoaderMockFactory* getURLLoaderMockFactory() override;
   blink::WebURLLoader* createURLLoader() override;
   WebData loadResource(const char* name) override;
   WebURLError cancelledError(const WebURL&) const override;
   InterfaceProvider* interfaceProvider() override;
 
+  virtual void runUntilIdle();
+
  protected:
   class TestingInterfaceProvider;
 
   const Config m_config;
   Platform* const m_oldPlatform;
   std::unique_ptr<TestingInterfaceProvider> m_interfaceProvider;
 };
 
 // This class adds mocked scheduler support to TestingPlatformSupport.  See also
 // ScopedTestingPlatformSupport to use this class correctly.
@@ skipping 11 matching lines @@
   // Runs a single task.
   void runSingleTask();
 
   // Runs all currently queued immediate tasks and delayed tasks whose delay has
   // expired plus any immediate tasks that are posted as a result of running
   // those tasks.
   //
   // This function ignores future delayed tasks when deciding if the system is
   // idle.  If you need to ensure delayed tasks run, try runForPeriodSeconds()
   // instead.
-  void runUntilIdle();
+  void runUntilIdle() override;
 
   // Runs for |seconds| the testing clock is advanced by |seconds|.  Note real
   // time elapsed will typically much less than |seconds| because delays between
   // timers are fast forwarded.
   void runForPeriodSeconds(double seconds);
 
   // Advances |m_clock| by |seconds|.
   void advanceClockSeconds(double seconds);
 
   scheduler::RendererScheduler* rendererScheduler() const;
@@ skipping 71 matching lines @@
       m_discardableMemoryAllocator;
   std::unique_ptr<DummyPlatform> m_dummyPlatform;
   std::unique_ptr<cc_blink::WebCompositorSupportImpl> m_compositorSupport;
   TestingPlatformSupport::Config m_testingPlatformConfig;
   std::unique_ptr<TestingPlatformSupport> m_testingPlatformSupport;
 };
 
 }  // namespace blink
 
 #endif  // TestingPlatformSupport_h