Abstract WebContentsObserver from Autofill shared code

components/autofill.gypi

 # Copyright (c) 2013 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': [
     {
       # Private target only used in components/autofill.
       'target_name': 'autofill_regexes',
       'type': 'none',
@@ skipping 241 matching lines @@
             'autofill/browser/webdata/autofill_entry.h',
             'autofill/browser/webdata/autofill_table.cc',
             'autofill/browser/webdata/autofill_table.h',
             'autofill/browser/webdata/autofill_webdata.h',
             'autofill/browser/webdata/autofill_webdata_backend.h',
             'autofill/browser/webdata/autofill_webdata_backend_impl.cc',
             'autofill/browser/webdata/autofill_webdata_backend_impl.h',
             'autofill/browser/webdata/autofill_webdata_service.cc',
             'autofill/browser/webdata/autofill_webdata_service.h',
             'autofill/browser/webdata/autofill_webdata_service_observer.h',
+            'autofill/content/browser/autofill_driver.cc',
+            'autofill/content/browser/autofill_driver.h',
 
             # This file is generated by the autofill_regexes action.
             '<(SHARED_INTERMEDIATE_DIR)/autofill_regex_constants.cc',
           ],
 
           # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
           'msvs_disabled_warnings': [4267, ],
         },
 
         {
@@ skipping 54 matching lines @@
           ],
           'variables': {
             'jni_gen_package': 'autofill',
           },
           'includes': [ '../build/jni_generator.gypi' ],
         },
       ],
     }],
   ],
 }