Make DevToolsManager a singleton, remove it from ContentBrowserClient

content/shell/shell_content_browser_client.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/shell/shell_content_browser_client.h"
 
 #include "base/file_path.h"
 #include "content/browser/webui/empty_web_ui_factory.h"
 #include "content/shell/shell.h"
 #include "content/shell/shell_browser_main.h"
@@ skipping 246 matching lines @@
 }
 
 ui::Clipboard* ShellContentBrowserClient::GetClipboard() {
   return shell_browser_main_parts_->GetClipboard();
 }
 
 MHTMLGenerationManager* ShellContentBrowserClient::GetMHTMLGenerationManager() {
   return NULL;
 }
 
-DevToolsManager* ShellContentBrowserClient::GetDevToolsManager() {
-  return NULL;
-}
-
 net::NetLog* ShellContentBrowserClient::GetNetLog() {
   return NULL;
 }
 
 speech_input::SpeechInputManager*
     ShellContentBrowserClient::GetSpeechInputManager() {
   return NULL;
 }
 
 AccessTokenStore* ShellContentBrowserClient::CreateAccessTokenStore() {
@@ skipping 62 matching lines @@
       tab_contents_view->tab_contents()->browser_context(),
       GURL(),
       tab_contents_view->tab_contents()->GetSiteInstance(),
       route_id,
       tab_contents_view->tab_contents());
   return shell->tab_contents();
 }
 #endif
 
 }  // namespace content