[OLD ATTEMPT, DO NOT REVIEW] mustash: Enable connections to mus from the Chrome renderer

content/browser/web_contents/web_contents_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/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
@@ skipping 516 matching lines @@
     new_contents->created_with_opener_ = true;
 
   if (params.guest_delegate) {
     // This makes |new_contents| act as a guest.
     // For more info, see comment above class BrowserPluginGuest.
     BrowserPluginGuest::Create(new_contents, params.guest_delegate);
     // We are instantiating a WebContents for browser plugin. Set its subframe
     // bit to true.
     new_contents->is_subframe_ = true;
   }
+
   new_contents->Init(params);
   return new_contents;
 }
 
 // static
 std::vector<WebContentsImpl*> WebContentsImpl::GetAllWebContents() {
   std::vector<WebContentsImpl*> result;
   scoped_ptr<RenderWidgetHostIterator> widgets(
       RenderWidgetHostImpl::GetRenderWidgetHosts());
   while (RenderWidgetHost* rwh = widgets->GetNextHost()) {
@@ skipping 824 matching lines @@
   if (browser_plugin_guest_ &&
       !BrowserPluginGuestMode::UseCrossProcessFramesForGuests()) {
     view_.reset(new WebContentsViewGuest(this, browser_plugin_guest_.get(),
                                          view_.Pass(),
                                          &render_view_host_delegate_view_));
   }
 
 #if defined(MOJO_SHELL_CLIENT)
   if (MojoShellConnection::Get() &&
       base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kUseMusInRenderer)) {
-    view_.reset(new WebContentsViewMus(this, view_.Pass(),
+          switches::kUseMusInRenderer) &&
+      params.mus_window) {
+    view_.reset(new WebContentsViewMus(this, params.mus_window, view_.Pass(),
                                        &render_view_host_delegate_view_));
   }
 #endif
 
   CHECK(render_view_host_delegate_view_);
   CHECK(view_.get());
 
   gfx::Size initial_size = params.initial_size;
   view_->CreateView(initial_size, params.context);
 
@@ skipping 3396 matching lines @@
   return NULL;
 }
 
 void WebContentsImpl::SetForceDisableOverscrollContent(bool force_disable) {
   force_disable_overscroll_content_ = force_disable;
   if (view_)
     view_->SetOverscrollControllerEnabled(CanOverscrollContent());
 }
 
 }  // namespace content