Basic scaffolding for a "content shell", i.e. test browser over the content module.

content/browser/browser_main.cc

 // Copyright (c) 2011 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/browser_main.h"
 
 #include "base/allocator/allocator_shim.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
@@ skipping 329 matching lines @@
 
 }  // namespace content
 
 // Main routine for running as the Browser process.
 int BrowserMain(const MainFunctionParams& parameters) {
   TRACE_EVENT_BEGIN_ETW("BrowserMain", 0, "");
 
   scoped_ptr<content::BrowserMainParts> parts(
       content::GetContentClient()->browser()->CreateBrowserMainParts(
           parameters));
+  if (!parts.get())
+    parts.reset(new content::BrowserMainParts(parameters));
 
   parts->EarlyInitialization();
 
   // Must happen before we try to use a message loop or display any UI.
   parts->InitializeToolkit();
 
   parts->MainMessageLoopStart();
 
   // WARNING: If we get a WM_ENDSESSION, objects created on the stack here
   // are NOT deleted. If you need something to run during WM_ENDSESSION add it
@@ skipping 38 matching lines @@
 #endif  // OS_WIN
 
   // Initialize histogram statistics gathering system.
   base::StatisticsRecorder statistics;
 
   parts->RunMainMessageLoopParts();
 
   TRACE_EVENT_END_ETW("BrowserMain", 0, 0);
   return parts->result_code();
 }