Add popup_blocker to WATCHLIST and add csharrison

Bug: None
Change-Id: Ib9d4ade94bf34530290ed905dc25720de226f702
Reviewed-on: https://chromium-review.googlesource.com/706075
Reviewed-by: Shivani Sharma <[email protected]>
Commit-Queue: Charlie Harrison <[email protected]>
Cr-Commit-Position: refs/heads/master@{#507183}

WATCHLISTS

@@ -1290,6 +1290,9 @@
                   'tools/polymer|'\
                   'ui/webui/resources/polymer_resources.grdp',
     },
+    'popup_blocker': {
+      'filepath': 'chrome/browser/ui/blocked_content'
+    },
     'precache': {
       'filepath': '[pP]recache'
     },
@@ -2164,6 +2167,7 @@
                     '[email protected]'],
     'plugin': ['[email protected]'],
     'polymer': ['[email protected]'],
+    'popup_blocker': ['[email protected]'],
     'precache': ['[email protected]'],
     'prepopulated_engines': ['[email protected]'],
     'prerender': ['[email protected]',