Fix single process mode in content_shell.

content/shell/shell_main_delegate.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/shell/shell_main_delegate.h"
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/path_service.h"
 #include "content/public/common/content_switches.h"
@@ skipping 79 matching lines @@
       command_line.GetSwitchValueASCII(switches::kProcessType);
   InitializeShellContentClient(process_type);
 }
 #endif  // OS_MACOSX
 
 void ShellMainDelegate::InitializeShellContentClient(
     const std::string& process_type) {
   if (process_type.empty()) {
     browser_client_.reset(new content::ShellContentBrowserClient);
     content::GetContentClient()->set_browser(browser_client_.get());
-  } else if (process_type == switches::kRendererProcess) {
+  }
+
+  if (process_type == switches::kRendererProcess ||
+      CommandLine::ForCurrentProcess()->HasSwitch(switches::kSingleProcess)) {
     renderer_client_.reset(new content::ShellContentRendererClient);
     content::GetContentClient()->set_renderer(renderer_client_.get());
   } else if (process_type == switches::kPluginProcess) {
     plugin_client_.reset(new content::ShellContentPluginClient);
     content::GetContentClient()->set_plugin(plugin_client_.get());
   } else if (process_type == switches::kUtilityProcess) {
     utility_client_.reset(new content::ShellContentUtilityClient);
     content::GetContentClient()->set_utility(utility_client_.get());
   }
 }
 
 void ShellMainDelegate::InitializeResourceBundle() {
   FilePath pak_file;
 #if defined(OS_MACOSX)
   pak_file = GetResourcesPakFilePath();
 #else
   FilePath pak_dir;
   PathService::Get(base::DIR_MODULE, &pak_dir);
   pak_file = pak_dir.Append(FILE_PATH_LITERAL("content_shell.pak"));
 #endif
   ui::ResourceBundle::InitSharedInstanceWithPakFile(pak_file);
 }