Mac app mode: locate Chrome + refactor

chrome/chrome_tests.gypi

 # 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.
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 4185 matching lines @@
           },
         },  # target renderer_sandbox_tests
         {
           # Tests for Mac app launcher.
           'target_name': 'app_mode_app_tests',
           'type': 'executable',
           'product_name': 'App Mode Loader Tests',
           'dependencies': [
             '../base/base.gyp:test_support_base',
             '../testing/gtest.gyp:gtest',
+            'chrome.gyp:chrome',  # run time dependency
+            'common_constants',
             'app_mode_app_support',
           ],
           'sources': [
+            'common/mac/app_mode_chrome_locator_unittest.mm',
             'test/base/app_mode_app_tests.cc',
           ],
           'include_dirs': [
             '..',
           ],
           'link_settings': {
             'libraries': [
               '$(SDKROOT)/System/Library/Frameworks/CoreFoundation.framework',
               '$(SDKROOT)/System/Library/Frameworks/Foundation.framework',
             ],
@@ skipping 425 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'
 }