Don't build a bunch of stuff on Aura, rather than ifdefing out code in 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' : {
     # Variables for js2gtest rules
     'gypv8sh': '../tools/gypv8sh.py',
     'js2gtest': 'test/base/js2gtest.js',
     'mock_js': 'third_party/mock4js/mock4js.js',
     'test_api_js': 'test/data/webui/test_api.js',
@@ skipping 2041 matching lines @@
         }],
         ['p2p_apis==1', {
           'sources': [
             '../content/browser/renderer_host/p2p/socket_host_test_utils.h',
             '../content/browser/renderer_host/p2p/socket_host_tcp_unittest.cc',
             '../content/browser/renderer_host/p2p/socket_host_tcp_server_unittest.cc',
             '../content/browser/renderer_host/p2p/socket_host_udp_unittest.cc',
             '../content/renderer/p2p/p2p_transport_impl_unittest.cc',
           ],
         }],
+        ['use_aura==1', {
+          'sources/': [
+            ['exclude', '^browser/automation/automation_provider_unittest.cc'],
+          ],
+        }],
         ['touchui==0', {
           'sources/': [
             ['exclude', '^browser/ui/touch/'],
             ['exclude', '^browser/ui/webui/chromeos/login/'],
           ],
         }],
         ['file_manager_extension==0', {
           'sources!': [
             'browser/ui/views/select_file_dialog_extension_unittest.cc',
           ],
@@ skipping 2224 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'
 }