Add support for ios_web_shell xctest for devices.

ios/web/ios_web_shell_exe.gypi

+# Copyright 2016 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.
+
+{
+  'type': 'executable',
+  'mac_bundle': 1,
+  'include_dirs': [
+    '../..',
+  ],
+  'dependencies': [
+    'ios_web.gyp:ios_web',
+    'ios_web.gyp:ios_web_app',
+    '../../base/base.gyp:base',
+    '../../net/net.gyp:net',
+    '../../net/net.gyp:net_extras',
+    '../../ui/base/ui_base.gyp:ui_base',
+  ],
+  'export_dependent_settings': [
+    'ios_web.gyp:ios_web',
+    'ios_web.gyp:ios_web_app',
+    '../../base/base.gyp:base',
+    '../../net/net.gyp:net',
+    '../../ui/base/ui_base.gyp:ui_base',
+  ],
+  'xcode_settings': {
+    'INFOPLIST_FILE': 'shell/Info.plist',
+  },
+  'sources': [
+    'shell/app_delegate.h',
+    'shell/app_delegate.mm',
+    'shell/shell_browser_state.h',
+    'shell/shell_browser_state.mm',
+    'shell/shell_main_delegate.h',
+    'shell/shell_main_delegate.mm',
+    'shell/shell_network_delegate.cc',
+    'shell/shell_network_delegate.h',
+    'shell/shell_url_request_context_getter.h',
+    'shell/shell_url_request_context_getter.mm',
+    'shell/shell_web_client.h',
+    'shell/shell_web_client.mm',
+    'shell/shell_web_main_parts.h',
+    'shell/shell_web_main_parts.mm',
+    'shell/view_controller.h',
+    'shell/view_controller.mm',
+    'shell/web_exe_main.mm',
+  ],
+  'link_settings': {
+    'libraries': [
+      '$(SDKROOT)/System/Library/Frameworks/CoreGraphics.framework',
+      '$(SDKROOT)/System/Library/Frameworks/CoreFoundation.framework',
+      '$(SDKROOT)/System/Library/Frameworks/Foundation.framework',
+      '$(SDKROOT)/System/Library/Frameworks/UIKit.framework',
+    ],
+    'mac_bundle_resources': [
+      'shell/Default.png',
+      'shell/MainView.xib',
+      'shell/textfield_background@2x.png',
+      'shell/toolbar_back@2x.png',
+      'shell/toolbar_forward@2x.png',
+    ],
+  },
+
+}