Move chrome.diagnostics API to extensions/.

extensions/extensions.gyp

 # Copyright 2013 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': [
     {
@@ skipping 872 matching lines @@
         ['OS == "ios" or OS == "android"', {
           'dependencies!': [
             '../components/components.gyp:storage_monitor',
           ],
         }],
         ['chromeos == 1', {
           'dependencies': [
             '../chromeos/chromeos.gyp:chromeos',
           ],
           'sources': [
+            'browser/api/diagnostics/diagnostics_api.cc',
+            'browser/api/diagnostics/diagnostics_api.h',
+            'browser/api/diagnostics/diagnostics_api_chromeos.cc',
             'browser/api/networking_config/networking_config_api.cc',
             'browser/api/networking_config/networking_config_api.h',
             'browser/api/networking_config/networking_config_service.cc',
             'browser/api/networking_config/networking_config_service.h',
             'browser/api/networking_config/networking_config_service_factory.cc',
             'browser/api/networking_config/networking_config_service_factory.h',
             'browser/api/vpn_provider/vpn_provider_api.cc',
             'browser/api/vpn_provider/vpn_provider_api.h',
             'browser/api/vpn_provider/vpn_service.cc',
             'browser/api/vpn_provider/vpn_service.h',
@@ skipping 340 matching lines @@
               '<(SHARED_INTERMEDIATE_DIR)/blink/devtools_resources.pak',
             ],
             'pak_output': '<(PRODUCT_DIR)/extensions_shell_and_test.pak',
           },
           'includes': [ '../build/repack_action.gypi' ],
         },
       ],
     },
   ]
 }