[MD History] Fix toolbar dates in grouped mode.

chrome/browser/resources/md_history/compiled_resources2.gyp

 # Copyright 2015 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.
 {
   'targets': [
     {
       'target_name': 'constants',
       'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
     {
@@ skipping 59 matching lines @@
         'constants',
       ],
       'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
     {
       'target_name': 'history_toolbar',
       'dependencies': [
         '<(DEPTH)/ui/webui/resources/cr_elements/cr_toolbar/compiled_resources2.gyp:cr_toolbar',
         '<(DEPTH)/ui/webui/resources/js/compiled_resources2.gyp:load_time_data',
         '<(DEPTH)/ui/webui/resources/js/compiled_resources2.gyp:util',
+        'constants',
+        '../history/compiled_resources2.gyp:externs',
       ],
       'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
     {
       'target_name': 'history',
       'dependencies': [
         '<(DEPTH)/ui/webui/resources/js/compiled_resources2.gyp:icon',
         '<(DEPTH)/ui/webui/resources/js/compiled_resources2.gyp:load_time_data',
         'constants',
         'app',
@@ skipping 66 matching lines @@
         '<(DEPTH)/ui/webui/resources/cr_elements/cr_lazy_render/compiled_resources2.gyp:cr_lazy_render',
         '<(DEPTH)/ui/webui/resources/cr_elements/cr_action_menu/compiled_resources2.gyp:cr_action_menu',
         '<(DEPTH)/ui/webui/resources/js/cr/ui/compiled_resources2.gyp:focus_grid',
         'browser_service',
         'synced_device_card',
       ],
       'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
   ],
 }