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

android_webview/android_webview.gyp

 # Copyright 2009 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.
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
       'target_name': 'android_webview_pak',
@@ skipping 192 matching lines @@
         'browser/aw_browser_permission_request_delegate.h',
         'browser/aw_contents_client_bridge_base.cc',
         'browser/aw_contents_client_bridge_base.h',
         'browser/aw_content_browser_client.cc',
         'browser/aw_content_browser_client.h',
         'browser/aw_contents_io_thread_client.h',
         'browser/aw_cookie_access_policy.cc',
         'browser/aw_cookie_access_policy.h',
         'browser/aw_dev_tools_discovery_provider.cc',
         'browser/aw_dev_tools_discovery_provider.h',
-        'browser/aw_dev_tools_manager_delegate.cc',
-        'browser/aw_dev_tools_manager_delegate.h',
         'browser/aw_download_manager_delegate.cc',
         'browser/aw_download_manager_delegate.h',
         'browser/aw_form_database_service.cc',
         'browser/aw_form_database_service.h',
         'browser/aw_gl_surface.cc',
         'browser/aw_gl_surface.h',
         'browser/aw_http_auth_handler_base.cc',
         'browser/aw_http_auth_handler_base.h',
         'browser/aw_javascript_dialog_manager.cc',
         'browser/aw_javascript_dialog_manager.h',
@@ skipping 148 matching lines @@
         'java_in_dir': 'glue/java',
         'resource_dir': 'apk/java/res',
       },
       'includes': [ 'apk/system_webview_apk_common.gypi' ],
     },
   ],
   'includes': [
     'android_webview_tests.gypi',
   ],
 }