Enable a minimal content/ build on iOS

ui/ui.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,
   },
   'includes': [
     'ui_resources.gypi',
@@ skipping 27 matching lines @@
         '../third_party/icu/icu.gyp:icui18n',
         '../third_party/icu/icu.gyp:icuuc',
       ],
       # iOS uses a small subset of ui. common_sources are the only files that
       # are built on iOS.
       'common_sources' : [
         'base/layout.cc',
         'base/layout.h',
         'base/models/tree_node_iterator.h',
         'base/models/tree_node_model.h',
+        'base/resource/data_pack.cc',
+        'base/resource/data_pack.h',
+        'base/resource/resource_handle.h',
         'base/ui_base_paths.cc',
         'base/ui_base_paths.h',
         'base/ui_base_switches.cc',
         'base/ui_base_switches.h',
         'base/ui_export.h',
         'gfx/image/image.cc',
         'gfx/image/image.h',
         'gfx/image/image_ios.mm',
         'gfx/image/image_mac.mm',
         'gfx/image/image_skia.cc',
@@ skipping 252 matching lines @@
         'base/native_theme/native_theme_base.cc',
         'base/native_theme/native_theme_base.h',
         'base/native_theme/native_theme_gtk.cc',
         'base/native_theme/native_theme_gtk.h',
         'base/native_theme/native_theme_win.cc',
         'base/native_theme/native_theme_win.h',
         'base/range/range.cc',
         'base/range/range.h',
         'base/range/range_mac.mm',
         'base/range/range_win.cc',
-        'base/resource/data_pack.cc',
-        'base/resource/data_pack.h',
         'base/resource/resource_bundle.cc',
         'base/resource/resource_bundle.h',
         'base/resource/resource_bundle_android.cc',
         'base/resource/resource_bundle_aurax11.cc',
         'base/resource/resource_bundle_gtk.cc',
         'base/resource/resource_bundle_mac.mm',
         'base/resource/resource_bundle_win.cc',
         'base/resource/resource_bundle_win.h',
         'base/resource/resource_data_dll_win.cc',
         'base/resource/resource_data_dll_win.h',
-        'base/resource/resource_handle.h',
         'base/text/bytes_formatting.cc',
         'base/text/bytes_formatting.h',
         'base/text/text_elider.cc',
         'base/text/text_elider.h',
         'base/text/utf16_indexing.cc',
         'base/text/utf16_indexing.h',
         'base/theme_provider.cc',
         'base/theme_provider.h',
         'base/touch/touch_factory.cc',
         'base/touch/touch_factory.h',
@@ skipping 463 matching lines @@
     },
   ],
   'conditions': [
     ['inside_chromium_build == 1', {
       'includes': [
         'ui_unittests.gypi',
       ]},
     ],
   ],
 }