Change browsing_data watchlist to cover ui as well

Change the watchlist to cover ui code like:
chrome/browser/resources/settings/clear_browsing_data_dialog
chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/ClearBrowsingData*

Change-Id: Ibe872c09e8ba9737faf474c1126524ca8c148531
Reviewed-on: https://chromium-review.googlesource.com/c/1276765Reviewed-by: Martin Šrámek <msramek@chromium.org>
Commit-Queue: Christian Dullweber <dullweber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#598787}

WATCHLISTS

@@ -618,7 +618,7 @@
                   '|chrome/browser/resources/settings/',
     },
     'browsing_data': {
-      'filepath': '/browsing_data/',
+      'filepath': 'browsing_data|BrowsingData',
     },
     'bubble': {
       'filepath': 'ui/views/bubble/|'\