Revert of Make RenderFrame(Host) own a RenderWidget(Host).

content/test/test_render_frame_host.h

 // Copyright 2013 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_TEST_TEST_RENDER_FRAME_HOST_H_
 #define CONTENT_TEST_TEST_RENDER_FRAME_HOST_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 19 matching lines @@
 
  private:
   RenderFrameHost* last_created_frame_;
 };
 
 class TestRenderFrameHost : public RenderFrameHostImpl,
                             public RenderFrameHostTester {
  public:
   TestRenderFrameHost(RenderViewHostImpl* render_view_host,
                       RenderFrameHostDelegate* delegate,
-                      RenderWidgetHostDelegate* rwh_delegate,
                       FrameTree* frame_tree,
                       FrameTreeNode* frame_tree_node,
                       int routing_id,
                       int flags);
   ~TestRenderFrameHost() override;
 
   // RenderFrameHostImpl overrides (same values, but in Test* types)
   TestRenderViewHost* GetRenderViewHost() override;
 
   // RenderFrameHostTester implementation.
@@ skipping 59 matching lines @@
 
   // See set_simulate_history_list_was_cleared() above.
   bool simulate_history_list_was_cleared_;
 
   DISALLOW_COPY_AND_ASSIGN(TestRenderFrameHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_TEST_TEST_RENDER_FRAME_HOST_H_