Add disk_cache watchlist, and join it.

WATCHLISTS

Index: WATCHLISTS
diff --git a/WATCHLISTS b/WATCHLISTS
index ef92bd53fc6d808b80e938be5af755b13506a104..18be0292abcfa852ccc0cf661d04781535b8eb04 100644
--- a/WATCHLISTS
+++ b/WATCHLISTS
@@ -98,6 +98,9 @@
       'filepath': 'net/cookies/.*|'\
         'chrome/browser/net/sqlite_persistent_cookie_store.*',
     },
+    'disk_cache': {
+      'filepath': 'net/disk_cache/|http_cache',

[wtc, 2012/07/12 22:58:15]

The filepath seems wrong.  It seems that it should be
    'filepath': 'net/disk_cache/|net/http_cache',
or even
    'filepath': 'net/disk_cache/.*|'\
                'net/http_cache/.*',

Also, there is no 'http_cache' subdirectory under 'net'.

+    },
     'dns': {
       'filepath': 'net/base/host_resolver.*|' \
         'net/base/host_cache.*|' \
@@ -410,6 +413,7 @@
                 'darin-cc@chromium.org'],
     'cookie_monster': ['erikwright@chromium.org', 'rkn@chromium.org',
                        'wtc@chromium.org'],
+    'disk_cache': ['gavinp+disk@chromium.org'],
     'dns': ['mmenke@chromium.org'],
     'download': ['rdsmith+dwatch@chromium.org'],
     'downloads_ui': ['asanka@chromium.org', 'rdsmith@chromium.org'],