[Media Router] Add UMA histograms tracking component extension version/wakeups

chrome/browser/media/router/media_router.gyp

 # Copyright 2015 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.
 
 {
   'includes': [
     'media_router.gypi',
   ],
   'targets': [
     {
@@ skipping 52 matching lines @@
     },
     {
       # GN version: //chrome/browser/media/router:test_support
       'target_name': 'media_router_test_support',
       'type': 'static_library',
       'include_dirs': [
         '<(DEPTH)',
       ],
       'dependencies': [
         'media_router',
+        # TODO(crbug.com/596999): Move non-Android code to mojo/
         'media_router_mojo',
         'media_router_mojo_gen',
         '<(DEPTH)/base/base.gyp:base',
         '<(DEPTH)/testing/gmock.gyp:gmock',
       ],
       'sources': [
         '<@(media_router_test_support_sources)',
       ],
+      'conditions': [
+        [ 'OS!="android" and OS!="ios"', {
+          'dependencies': [
+            '<(DEPTH)/extensions/extensions.gyp:extensions_common',
+          ],
+          'sources': [
+            '<@(media_router_non_android_test_support_sources)',
+          ]
+        }],
+      ]
     },
   ],
 }