[DevTools] Move target-related methods from DevToolsHttpHandlerDelegate to DevToolsManagerDelegate.

extensions/shell/browser/shell_content_browser_client.cc

 // Copyright 2014 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 "extensions/shell/browser/shell_content_browser_client.h"
 
 #include "base/command_line.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/site_instance.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/url_constants.h"
 #include "content/shell/browser/shell_browser_context.h"
+#include "content/shell/browser/shell_devtools_delegate.h"
 #include "extensions/browser/extension_message_filter.h"
 #include "extensions/browser/extension_protocols.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/info_map.h"
 #include "extensions/browser/process_map.h"
 #include "extensions/common/constants.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/switches.h"
 #include "extensions/shell/browser/shell_browser_context.h"
 #include "extensions/shell/browser/shell_browser_main_parts.h"
@@ skipping 213 matching lines @@
 }
 
 const Extension* ShellContentBrowserClient::GetExtension(
     content::SiteInstance* site_instance) {
   ExtensionRegistry* registry =
       ExtensionRegistry::Get(site_instance->GetBrowserContext());
   return registry->enabled_extensions().GetExtensionOrAppByURL(
       site_instance->GetSiteURL());
 }
 
+content::DevToolsManagerDelegate*
+ShellContentBrowserClient::GetDevToolsManagerDelegate() {
+  return new content::ShellDevToolsManagerDelegate(GetBrowserContext());
+}
+
 }  // namespace extensions