Prevent the browser process from creating duplicate RenderViewHosts.

content/browser/renderer_host/render_view_host_impl.cc

 // 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.
 
 #include "content/browser/renderer_host/render_view_host_impl.h"
 
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 1303 matching lines @@
     const ViewHostMsg_CreateWindow_Params& params,
     SessionStorageNamespace* session_storage_namespace) {
   ViewHostMsg_CreateWindow_Params validated_params(params);
   ChildProcessSecurityPolicyImpl* policy =
       ChildProcessSecurityPolicyImpl::GetInstance();
   FilterURL(policy, GetProcess(), false, &validated_params.target_url);
   FilterURL(policy, GetProcess(), false, &validated_params.opener_url);
   FilterURL(policy, GetProcess(), true,
             &validated_params.opener_security_origin);
 
-  delegate_->CreateNewWindow(route_id, main_frame_route_id,
-                             validated_params, session_storage_namespace);
+  delegate_->CreateNewWindow(
+      GetProcess()->GetID(), route_id, main_frame_route_id, validated_params,
+      session_storage_namespace);
 }
 
 void RenderViewHostImpl::CreateNewWidget(int route_id,
                                      blink::WebPopupType popup_type) {
   delegate_->CreateNewWidget(route_id, popup_type);
 }
 
 void RenderViewHostImpl::CreateNewFullscreenWidget(int route_id) {
   delegate_->CreateNewFullscreenWidget(route_id);
 }
@@ skipping 964 matching lines @@
 void RenderViewHostImpl::AttachToFrameTree() {
   FrameTree* frame_tree = delegate_->GetFrameTree();
 
   frame_tree->SwapMainFrame(main_render_frame_host_.get());
   if (main_frame_id() != FrameTreeNode::kInvalidFrameId) {
     frame_tree->OnFirstNavigationAfterSwap(main_frame_id());
   }
 }
 
 }  // namespace content