Revert of Bring RFH/RVH unit tests closer to reality of how RF/RV are initialized

content/test/test_render_frame_host.h

Index: content/test/test_render_frame_host.h
diff --git a/content/test/test_render_frame_host.h b/content/test/test_render_frame_host.h
index 1b28496bef0b05c7f632c22d6c04a9a52224a190..3b0c9ae13b2ad97987fdc015de6cab85c808db6b 100644
--- a/content/test/test_render_frame_host.h
+++ b/content/test/test_render_frame_host.h
@@ -123,11 +123,6 @@
     simulate_history_list_was_cleared_ = cleared;
   }
 
-  // Simulates initialization of the RenderFrame object in the renderer process
-  // and ensures internal state of RenderFrameHost is ready for simulating
-  // RenderFrame originated IPCs.
-  void InitializeRenderFrameIfNeeded();
-
   // Advances the RenderFrameHost (and through it the RenderFrameHostManager) to
   // a state where a new navigation can be committed by a renderer. Currently,
   // this simulates a BeforeUnload ACK from the renderer.