Move startup_helper_win.cc to separate target for incremental build

ui/views/examples/examples.gyp

 # Copyright 2014 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': {
     'chromium_code': 1,
   },
   'targets': [
     {
       'target_name': 'views_examples_lib',
@@ skipping 138 matching lines @@
     {
       'target_name': 'views_examples_with_content_exe',
       'type': 'executable',
       'dependencies': [
         '../../../base/base.gyp:base',
         '../../../content/content.gyp:content',
         '../../views_content_client/views_content_client.gyp:views_content_client',
         'views_examples_with_content_lib',
       ],
       'sources': [
-        '../../../content/app/startup_helper_win.cc',
         'examples_with_content_main_exe.cc',
       ],
       'conditions': [
         ['OS=="win"', {
           'link_settings': {
             'libraries': [
               '-limm32.lib',
               '-loleacc.lib',
             ]
           },
           'msvs_settings': {
             'VCManifestTool': {
               'AdditionalManifestFiles': [
                 'views_examples.exe.manifest',
               ],
             },
             'VCLinkerTool': {
               'SubSystem': '2',  # Set /SUBSYSTEM:WINDOWS
             },
           },
           'dependencies': [
             '../../../sandbox/sandbox.gyp:sandbox',
+            '../../../content/content.gyp:content_startup_helper_win',
           ],
         }],
       ],
     },  # target_name: views_examples_with_content_exe
   ],
 }