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

chrome/browser/media/router/media_router.gypi

Index: chrome/browser/media/router/media_router.gypi
diff --git a/chrome/browser/media/router/media_router.gypi b/chrome/browser/media/router/media_router.gypi
index 7556a6c7106ec2f760c70d10a8eb6770c66bf8fd..073db226c66e6ebd0d72d00babff797497eaa3d9 100644
--- a/chrome/browser/media/router/media_router.gypi
+++ b/chrome/browser/media/router/media_router.gypi
@@ -2,6 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+# TODO(crbug.com/596999): Move non-Android code to mojo/
 {
   'variables': {
     # File lists shared with GN build.
@@ -55,8 +56,6 @@
       'media_router_type_converters.h',
     ],
     'media_router_test_support_sources': [
-      'media_router_mojo_test.cc',
-      'media_router_mojo_test.h',
       'mock_media_router.cc',
       'mock_media_router.h',
       'mock_screen_availability_listener.cc',
@@ -64,5 +63,9 @@
       'test_helper.cc',
       'test_helper.h',
     ],
+    'media_router_non_android_test_support_sources': [
+      'media_router_mojo_test.cc',
+      'media_router_mojo_test.h',
+    ],
   },
 }