Browser watcher, part deux.

components/browser_watcher.gypi

 # Copyright (c) 2014 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.
 
 {
   'conditions': [
   ['OS=="win"', {
       'targets': [
           {
+            # This is a separate lib to minimize the dependencies for its
+            # hosting binary "chrome_watcher.dll".
             'target_name': 'browser_watcher_lib',
             'type': 'static_library',
             'sources': [
-              'browser_watcher/watcher_win.cc',
-              'browser_watcher/watcher_win.h',
+              'browser_watcher/exit_code_watcher_win.cc',
+              'browser_watcher/exit_code_watcher_win.h',
             ],
             'dependencies': [
               '../base/base.gyp:base',
             ],
           },
+          {
+            # Users of the watcher link this target.
+            'target_name': 'browser_watcher_client',
+            'type': 'static_library',
+            'sources': [
+              'browser_watcher/watcher_client_win.cc',
+              'browser_watcher/watcher_client_win.h',
+            ],
+            'dependencies': [
+              'browser_watcher_lib',
+              '../base/base.gyp:base',
+            ],
+          },
         ],
       }
     ],
   ],
 }