content: Cleanup class/struct forward declarations

content/public/test/test_renderer_host.h

 // Copyright (c) 2012 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 CONTENT_PUBLIC_TEST_TEST_RENDERER_HOST_H_
 #define CONTENT_PUBLIC_TEST_TEST_RENDERER_HOST_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 23 matching lines @@
 
 namespace content {
 
 class BrowserContext;
 class ContentBrowserSanityChecker;
 class MockGpuChannelEstablishFactory;
 class MockRenderProcessHost;
 class MockRenderProcessHostFactory;
 class NavigationController;
 class RenderProcessHostFactory;
-class RenderViewHostDelegate;
 class TestRenderFrameHostFactory;
 class TestRenderViewHostFactory;
 class WebContents;
 struct WebPreferences;
 
 // An interface and utility for driving tests of RenderFrameHost.
 class RenderFrameHostTester {
  public:
   // Retrieves the RenderFrameHostTester that drives the specified
   // RenderFrameHost. The RenderFrameHost must have been created while
@@ skipping 226 matching lines @@
   std::unique_ptr<MockGpuChannelEstablishFactory> gpu_channel_factory_;
 #endif
   RenderViewHostTestEnabler rvh_test_enabler_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostTestHarness);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_TEST_TEST_RENDERER_HOST_H_