Clear SingleProcess and InProcessGPU logic.

content/browser/renderer_host/render_process_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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 453 matching lines @@
                                 IPC::Channel::MODE_SERVER,
                                 this,
                                 BrowserThread::GetMessageLoopProxyForThread(
                                     BrowserThread::IO).get()));
 
   // Call the embedder first so that their IPC filters have priority.
   GetContentClient()->browser()->RenderProcessHostCreated(this);
 
   CreateMessageFilters();
 
-  // Single-process mode not supported in multiple-dll mode currently.
-  if (run_renderer_in_process() && g_renderer_main_thread_factory) {
+  if (run_renderer_in_process()) {
+    CHECK(g_renderer_main_thread_factory);

[piman, 2013/11/07 22:09:52]

Should be DCHECK

     // Crank up a thread and run the initialization there.  With the way that
     // messages flow between the browser and renderer, this thread is required
     // to prevent a deadlock in single-process mode.  Since the primordial
     // thread in the renderer process runs the WebKit code and can sometimes
     // make blocking calls to the UI thread (i.e. this thread), they need to run
     // on separate threads.
     in_process_renderer_.reset(g_renderer_main_thread_factory(channel_id));
 
     base::Thread::Options options;
 #if defined(OS_WIN) && !defined(OS_MACOSX)
@@ skipping 1348 matching lines @@
     // Skip widgets in other processes.
     if (widget->GetProcess()->GetID() != GetID())
       continue;
 
     RenderViewHost* rvh = RenderViewHost::From(widget);
     rvh->UpdateWebkitPreferences(rvh->GetWebkitPreferences());
   }
 }
 
 }  // namespace content