Create CoreTabHelper, move remaining core TCW functionality into it.

chrome/chrome_tests.gypi

 # Copyright (c) 2011 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.
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 2833 matching lines @@
             'ENABLE_SAFE_BROWSING',
           ],
         }, {  # safe_browsing == 0
           'sources/': [
             ['exclude', '^browser/safe_browsing/'],
             ['exclude', '^renderer/safe_browsing/'],
           ],
         }],
         ['internal_pdf', {
           'sources': [
-            'browser/pdf_browsertest.cc',
+            'browser/ui/pdf/pdf_browsertest.cc',
           ],
         }],
         ['OS!="linux" or toolkit_views==1', {
           'sources!': [
             'browser/extensions/browser_action_test_util_gtk.cc',
             'browser/ui/gtk/view_id_util_browsertest.cc',
           ],
         }],
         ['OS=="win"', {
           'sources': [
@@ skipping 1450 matching lines @@
               # Use outputs of this action as inputs for the main target build.
               # Seems as a misnomer but makes this happy on Linux (scons).
               'process_outputs_as_sources': 1,
             },
           ],  # 'actions'
         },
       ]
     }],  # 'coverage!=0'
   ],  # 'conditions'
 }