Instant: Use only one hidden WebContents per profile.

WATCHLISTS

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Watchlist Rules
 # Refer: http://dev.chromium.org/developers/contributing-code/watchlists
 
 # IMPORTANT: The regular expression filepath is tested against each path using
 # re.search, so it is not usually necessary to add .*.
 
@@ skipping 236 matching lines @@
     'imageburner': {
       'filepath': 'imageburner'
     },
     'importer': {
       'filepath': 'import',
     },
     'installer': {
       'filepath': 'chrome/installer/',
     },
     'instant': {
-      'filepath': 'instant|searchbox',
+      'filepath': 'instant|searchbox|/ui/search/',
     },
     'ipc': {
       'filepath': 'ipc/ipc',
     },
     'labs': {
       'filepath': 'chrome/browser/labs' \
                   '|chrome/browser/dom_ui/labs'
     },
     'layout_tests': {
       'filepath': 'webkit/(tools|data)/(layout_tests|test_shell)/',
@@ skipping 438 matching lines @@
                    'groby+watch@chromium.org',
                    'rouslan+watch@chromium.org'],
     'website_settings': ['markusheintz@chromium.org'],
     'webkit': ['darin-cc@chromium.org'],
     'worker': ['jam@chromium.org'],
     'x11': ['derat+watch@chromium.org',
             'sadrul@chromium.org',
             'yusukes+watch@chromium.org'],
   },
 }