Cleans up gyp file for views example and removes duplicate code

ui/views/views.gyp

 # 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': {
     'chromium_code': 1,
   },
   'target_defaults': {
     'conditions': [
       ['use_aura==1', {
@@ skipping 975 matching lines @@
         '../../third_party/icu/icu.gyp:icuuc',
         '../../url/url.gyp:url_lib',
         '../events/events.gyp:events',
         '../gfx/gfx.gyp:gfx',
         '../gfx/gfx.gyp:gfx_geometry',
         '../resources/ui_resources.gyp:ui_resources',
         '../resources/ui_resources.gyp:ui_test_pak',
         '../ui.gyp:ui',
         'controls/webview/webview.gyp:webview',
         'views',
+        'views_examples_lib',
       ],
       'include_dirs': [
         '..',
       ],
       'defines': [
         'VIEWS_EXAMPLES_WITH_CONTENT_IMPLEMENTATION',
       ],
       'sources': [
-        'examples/bubble_example.cc',
-        'examples/bubble_example.h',
-        'examples/button_example.cc',
-        'examples/button_example.h',
-        'examples/checkbox_example.cc',
-        'examples/checkbox_example.h',
-        'examples/combobox_example.cc',
-        'examples/combobox_example.h',
-        'examples/double_split_view_example.cc',
-        'examples/double_split_view_example.h',
-        'examples/example_base.cc',
-        'examples/example_base.h',
-        'examples/example_combobox_model.cc',
-        'examples/example_combobox_model.h',
         'examples/examples_window_with_content.cc',
         'examples/examples_window_with_content.h',
-        'examples/label_example.cc',
-        'examples/label_example.h',
-        'examples/link_example.cc',
-        'examples/link_example.h',
-        'examples/message_box_example.cc',
-        'examples/message_box_example.h',
-        'examples/menu_example.cc',
-        'examples/menu_example.h',
-        'examples/multiline_example.cc',
-        'examples/multiline_example.h',
-        'examples/progress_bar_example.cc',
-        'examples/progress_bar_example.h',
-        'examples/radio_button_example.cc',
-        'examples/radio_button_example.h',
-        'examples/scroll_view_example.cc',
-        'examples/scroll_view_example.h',
-        'examples/single_split_view_example.cc',
-        'examples/single_split_view_example.h',
-        'examples/slider_example.cc',
-        'examples/slider_example.h',
-        'examples/tabbed_pane_example.cc',
-        'examples/tabbed_pane_example.h',
-        'examples/table_example.cc',
-        'examples/table_example.h',
-        'examples/text_example.cc',
-        'examples/text_example.h',
-        'examples/textfield_example.cc',
-        'examples/textfield_example.h',
-        'examples/throbber_example.cc',
-        'examples/throbber_example.h',
-        'examples/tree_view_example.cc',
-        'examples/tree_view_example.h',
         'examples/views_examples_with_content_export.h',
         'examples/webview_example.cc',
         'examples/webview_example.h',
-        'examples/widget_example.cc',
-        'examples/widget_example.h',
       ],
       'conditions': [
         ['OS=="win"', {
           'include_dirs': [
             '../third_party/wtl/include',
           ],
           # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
           'msvs_disabled_warnings': [ 4267, ],
         }],
       ],
@@ skipping 65 matching lines @@
           'sources/': [
             # This is needed because the aura rule strips it from the default
             # sources list.
             ['include', '^../../content/app/startup_helper_win.cc'],
           ],
         }],
       ],
     },  # target_name: views_examples_with_content_exe
   ],
 }