Add --auto-open-devtools-for-tabs flag.

chrome/test/base/testing_browser_process.h

 // 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.
 
 // An implementation of BrowserProcess for unit tests that fails for most
 // services. By preventing creation of services, we reduce dependencies and
 // keep the profile clean. Clients of this class must handle the NULL return
 // value, however.
 
 #ifndef CHROME_TEST_BASE_TESTING_BROWSER_PROCESS_H_
@@ skipping 73 matching lines @@
       override;
   net::URLRequestContextGetter* system_request_context() override;
   BrowserProcessPlatformPart* platform_part() override;
 
   extensions::EventRouterForwarder* extension_event_router_forwarder() override;
   NotificationUIManager* notification_ui_manager() override;
   message_center::MessageCenter* message_center() override;
   IntranetRedirectDetector* intranet_redirect_detector() override;
   void CreateDevToolsHttpProtocolHandler(const std::string& ip,
                                          uint16_t port) override;
+  void CreateDevToolsAutoOpener() override;
   unsigned int AddRefModule() override;
   unsigned int ReleaseModule() override;
   bool IsShuttingDown() override;
   printing::PrintJobManager* print_job_manager() override;
   printing::PrintPreviewDialogController* print_preview_dialog_controller()
       override;
   printing::BackgroundPrintingManager* background_printing_manager() override;
   const std::string& GetApplicationLocale() override;
   void SetApplicationLocale(const std::string& app_locale) override;
   DownloadStatusUpdater* download_status_updater() override;
@@ skipping 105 matching lines @@
 class TestingBrowserProcessInitializer {
  public:
   TestingBrowserProcessInitializer();
   ~TestingBrowserProcessInitializer();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TestingBrowserProcessInitializer);
 };
 
 #endif  // CHROME_TEST_BASE_TESTING_BROWSER_PROCESS_H_