[DevTools] Cleanup DevToolsTarget and DevToolsManagerDelegate after moving to devtools_discovery.

chromecast/browser/cast_content_browser_client.h

 // 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.
 
 #ifndef CHROMECAST_BROWSER_CAST_CONTENT_BROWSER_CLIENT_H_
 #define CHROMECAST_BROWSER_CAST_CONTENT_BROWSER_CLIENT_H_
 
 #include <map>
 
 #include "base/macros.h"
@@ skipping 73 matching lines @@
       const GURL& target_url,
       const content::Referrer& referrer,
       WindowOpenDisposition disposition,
       const blink::WebWindowFeatures& features,
       bool user_gesture,
       bool opener_suppressed,
       content::ResourceContext* context,
       int render_process_id,
       int opener_id,
       bool* no_javascript_access) override;
-  content::DevToolsManagerDelegate* GetDevToolsManagerDelegate() override;
   void GetAdditionalMappedFilesForChildProcess(
       const base::CommandLine& command_line,
       int child_process_id,
       content::FileDescriptorInfo* mappings) override;
 #if defined(OS_ANDROID) && defined(VIDEO_HOLE)
   content::ExternalVideoSurfaceContainer*
   OverrideCreateExternalVideoSurfaceContainer(
       content::WebContents* web_contents) override;
 #endif  // defined(OS_ANDROID) && defined(VIDEO_HOLE)
 
@@ skipping 22 matching lines @@
 
   scoped_ptr<URLRequestContextFactory> url_request_context_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CastContentBrowserClient);
 };
 
 }  // namespace shell
 }  // namespace chromecast
 
 #endif  // CHROMECAST_BROWSER_CAST_CONTENT_BROWSER_CLIENT_H_