Refactor RFHM::InitRenderView to take in RenderFrameProxyHost parameter

content/browser/frame_host/render_frame_host_manager.h

Index: content/browser/frame_host/render_frame_host_manager.h
diff --git a/content/browser/frame_host/render_frame_host_manager.h b/content/browser/frame_host/render_frame_host_manager.h
index 3a40ad73e5bc87f71b23a73a81dff4d788ad1f4c..3cf8ea569f51a7a57a08c05024b90c11ad5e261e 100644
--- a/content/browser/frame_host/render_frame_host_manager.h
+++ b/content/browser/frame_host/render_frame_host_manager.h
@@ -669,13 +669,12 @@ class CONTENT_EXPORT RenderFrameHostManager {
                                         SiteInstance* new_instance,
                                         int bindings);
 
-  // Sets up the necessary state for a new RenderViewHost.  Creates a
-  // RenderFrameProxy in the target renderer process with the given
-  // |proxy_routing_id|, which is used to route IPC messages when in swapped
-  // out state.  Returns early if the RenderViewHost has already been
-  // initialized for another RenderFrameHost.
+  // Sets up the necessary state for a new RenderViewHost.  If |proxy| is not
+  // null, it creates a RenderFrameProxy in the target renderer process which is
+  // used to route IPC messages when in swapped out state.  Returns early if the
+  // RenderViewHost has already been initialized for another RenderFrameHost.
   bool InitRenderView(RenderViewHostImpl* render_view_host,
-                      int proxy_routing_id);
+                      RenderFrameProxyHost* proxy);
 
   // Initialization for RenderFrameHost uses the same sequence as InitRenderView
   // above.