Add bookmarks platform-specific directories to my watchlist.

TEST=~/depot_tools/watchlist.py chrome/browser/ui/views/bookmarks
R=sky@chromium.org

Review URL: https://codereview.chromium.org/12079066

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@179888 0039d316-1c4b-4281-b951-d872f2087c98

WATCHLISTS

@@ -76,7 +76,10 @@
     },
     'bookmarks': {
       'filepath': 'chrome/browser/bookmarks/' \
-                  '|chrome/browser/ui/bookmarks/'
+                  '|chrome/browser/ui/bookmarks/' \
+                  '|chrome/browser/ui/cocoa/bookmarks/' \
+                  '|chrome/browser/ui/gtk/bookmarks/' \
+                  '|chrome/browser/ui/views/bookmarks/'
     },
     'browser': {
       'filepath': 'chrome/browser/',