Create top-level ios/public/ directory.

ios/consumer/ios_consumer.gyp

-# Copyright 2013 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': 'ios_consumer_base',
-      'type': 'static_library',
-      'dependencies': [
-        '../../base/base.gyp:base',
-      ],
-      'include_dirs': [
-        '../..',
-      ],
-      'sources': [
-        'base/supports_user_data.cc',
-        'base/util.mm',
-        'public/base/supports_user_data.h',
-        'public/base/util.h',
-      ],
-    },
-    {
-      'target_name': 'ios_consumer_unittests',
-      'type': '<(gtest_target_type)',
-      'dependencies': [
-        '../../base/base.gyp:base',
-        '../../base/base.gyp:run_all_unittests',
-        '../../base/base.gyp:test_support_base',
-        '../../testing/gmock.gyp:gmock',
-        '../../testing/gtest.gyp:gtest',
-        'ios_consumer_base',
-      ],
-      'sources': [
-        'base/supports_user_data_unittest.cc',
-      ],
-    },
-  ],
-}