Move FilePathWatcher class from browser/... to common/...

content/content_common.gypi

Index: content/content_common.gypi
diff --git a/content/content_common.gypi b/content/content_common.gypi
index 25301892a7ea61f18d6d1c2a7e0d49881e796136..f3430ab03975753aa98585c53dc51177dab022e6 100644
--- a/content/content_common.gypi
+++ b/content/content_common.gypi
@@ -58,6 +58,11 @@
         'common/debug_flags.h',
         'common/dx_diag_node.cc',
         'common/dx_diag_node.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',
@@ -78,7 +83,7 @@
         'common/hi_res_timer_manager_posix.cc',
         'common/hi_res_timer_manager_win.cc',
         'common/hi_res_timer_manager.h',
-        'common/main_function_params.h',          
+        'common/main_function_params.h',
         'common/message_router.cc',
         'common/message_router.h',
         'common/mime_registry_messages.h',
@@ -125,6 +130,16 @@
         ['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',
+          ],
+        }],
       ],
     },
   ],