Browser watcher first installment.

components/components.gyp

 # Copyright (c) 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': {
     # This turns on e.g. the filename-based detection of which
     # platforms to include source files on (e.g. files ending in
     # _mac.h or _mac.cc are only compiled on MacOSX).
     'chromium_code': 1,
@@ skipping 81 matching lines @@
       'includes': [
         'pairing.gypi',
         'timers.gypi',
       ],
     }],
     ['OS == "win" or OS == "mac"', {
       'includes': [
         'wifi.gypi',
       ],
     }],
+    ['OS == "win"', {
+      'includes': [
+        'browser_watcher.gypi',
+      ],
+    }],
     ['chromeos == 1 or use_ash == 1', {
       'includes': [
         'session_manager.gypi',
         'user_manager.gypi',
       ],
     }],
     ['toolkit_views==1', {
       'includes': [
         'constrained_window.gypi',
       ],
@@ skipping 10 matching lines @@
         'invalidation.gypi',
       ],
     }],
     ['enable_plugins==1', {
       'includes': [
         'pdf.gypi',
       ],
     }],
   ],
 }