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

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index d67003ebc34d4aa375ff4143f275c3376dd360c1..5d5abb5ec629a52eb2065d96b2d7b2d5809041ee 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -1072,11 +1072,6 @@
         'browser/favicon_helper.h',
         'browser/favicon_service.cc',
         'browser/favicon_service.h',
-        'browser/file_path_watcher/file_path_watcher.cc',
-        'browser/file_path_watcher/file_path_watcher.h',
-        'browser/file_path_watcher/file_path_watcher_inotify.cc',
-        'browser/file_path_watcher/file_path_watcher_mac.cc',
-        'browser/file_path_watcher/file_path_watcher_win.cc',
         'browser/file_select_helper.cc',
         'browser/file_select_helper.h',
         'browser/first_run/first_run.cc',
@@ -3440,7 +3435,6 @@
           ],
         }, {  # OS != "linux"
           'sources!': [
-            'browser/file_path_watcher/file_path_watcher_inotify.cc',
             'browser/ui/webui/options/certificate_manager_handler.cc',
             'browser/ui/webui/options/certificate_manager_handler.h',
           ],
@@ -3452,9 +3446,6 @@
             '../build/linux/system.gyp:nss',
             '../build/linux/system.gyp:x11',
           ],
-          'sources': [
-            'browser/file_path_watcher/file_path_watcher_stub.cc',
-          ],
         }],
         # Use system SSL settings on Mac and Windows.  Use preferences
         # for SSL settings on other platforms.