Patch for bug 74983 (among others) to be applied to M11 696 branch.

content/content_common.gypi

 # Copyright (c) 2011 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.
 
 {
   'targets': [
     {
       'target_name': 'content_common',
       'type': '<(library)',
       'dependencies': [
@@ skipping 10 matching lines @@
         'common/child_thread.cc',
         'common/child_thread.h',
         'common/common_param_traits.cc',
         'common/common_param_traits.h',
         'common/content_message_generator.cc',
         'common/content_message_generator.h',
         'common/content_constants.cc',
         'common/content_constants.h',
         'common/content_switches.cc',
         'common/content_switches.h',
+        'common/file_path_watcher/file_path_watcher.cc',
+        'common/file_path_watcher/file_path_watcher.h',
+        'common/file_path_watcher/file_path_watcher_inotify.cc',
+        'common/file_path_watcher/file_path_watcher_mac.cc',
+        'common/file_path_watcher/file_path_watcher_win.cc',
         'common/file_system/file_system_dispatcher.cc',
         'common/file_system/file_system_dispatcher.h',
         'common/file_system/webfilesystem_callback_dispatcher.cc',
         'common/file_system/webfilesystem_callback_dispatcher.h',
         'common/file_system/webfilesystem_impl.cc',
         'common/file_system/webfilesystem_impl.h',
         'common/file_system/webfilewriter_impl.cc',
         'common/file_system/webfilewriter_impl.h',
         'common/file_system_messages.h',
         'common/message_router.cc',
@@ skipping 18 matching lines @@
         'common/resource_response.h',
         'common/socket_stream.h',
         'common/socket_stream_dispatcher.cc',
         'common/socket_stream_dispatcher.h',
         'common/socket_stream_messages.h',
       ],
       'conditions': [
         ['OS=="win"', {
           'msvs_guid': '062E9260-304A-4657-A74C-0D3AA1A0A0A4',
         }],
+        ['OS!="linux"', {
+          'sources!': [
+            'common/file_path_watcher/file_path_watcher_inotify.cc',
+          ],
+        }],
+        ['OS=="freebsd" or OS=="openbsd"', {
+          'sources': [
+            'common/file_path_watcher/file_path_watcher_stub.cc',
+          ],
+        }],      
       ],
     },
   ],
 }