Ensure that before creating proxy of site A, RVH of site A is initialized.

content/browser/frame_host/render_frame_host_impl.cc

 // 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.
 
 #include "content/browser/frame_host/render_frame_host_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/containers/hash_tables.h"
 #include "base/lazy_instance.h"
@@ skipping 499 matching lines @@
   // crashed) have been initialized. Calling Init multiple times will be
   // ignored, so this is safe.
   if (!GetProcess()->Init())
     return false;
 
   DCHECK(GetProcess()->HasConnection());
 
   Send(new FrameMsg_NewFrame(routing_id_, parent_routing_id, proxy_routing_id,
                              frame_tree_node()->current_replication_state()));
 
+  if (proxy_routing_id != MSG_ROUTING_NONE) {
+    RenderFrameProxyHost* proxy = RenderFrameProxyHost::FromID(
+        GetProcess()->GetID(), proxy_routing_id);
+    DCHECK(proxy);

[nasko, 2015/01/20 23:51:23]

nit: no need for this DCHECK, it will crash on the following line.

[lazyboy, 2015/01/21 18:52:14]

Done.

+    // We have also created a RenderFrameProxy in FrameMsg_NewFrame above, so
+    // remember that.
+    proxy->set_render_frame_proxy_created(true);
+  }
+
   // The renderer now has a RenderFrame for this RenderFrameHost.  Note that
   // this path is only used for out-of-process iframes.  Main frame RenderFrames
   // are created with their RenderView, and same-site iframes are created at the
   // time of OnCreateChildFrame.
   set_render_frame_created(true);
 
   return true;
 }
 
 bool RenderFrameHostImpl::IsRenderFrameLive() {
@@ skipping 1112 matching lines @@
 void RenderFrameHostImpl::DidUseGeolocationPermission() {
   RenderFrameHost* top_frame = frame_tree_node()->frame_tree()->GetMainFrame();
   GetContentClient()->browser()->RegisterPermissionUsage(
       PERMISSION_GEOLOCATION,
       delegate_->GetAsWebContents(),
       GetLastCommittedURL().GetOrigin(),
       top_frame->GetLastCommittedURL().GetOrigin());
 }
 
 }  // namespace content