Make ninja work with XCTests for iOS.

test/ios/xctests/xctests.gyp

+# Copyright 2015 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.
+{
+  'conditions': [
+    ['"<(GENERATOR)"=="ninja"', {
+      'make_global_settings': [
+        ['CC', '/usr/bin/clang'],
+        ['CXX', '/usr/bin/clang++'],
+      ],
+    }]
+  ],
+  'target_defaults': {
+      'xcode_settings': {
+        'OTHER_CFLAGS': [
+          '-fobjc-abi-version=2',
+        ],
+        'GCC_VERSION': 'com.apple.compilers.llvm.clang.1_0',
+        'SDKROOT': 'iphonesimulator',  # -isysroot
+        'CONFIGURATION_BUILD_DIR':'build/Default',
+        'IPHONEOS_DEPLOYMENT_TARGET': '9.0',
+        'CODE_SIGN_IDENTITY[sdk=iphoneos*]': 'iPhone Developer',
+      }
+  },
+  'targets': [
+    {
+      'target_name': 'app_under_test',
+      'type': 'executable',
+      'mac_bundle': 1,
+      'mac_bundle_resources': [
+        'App/Base.lproj/LaunchScreen.xib',
+        'App/Base.lproj/Main.storyboard',
+      ],
+      'sources': [
+        'App/AppDelegate.h',
+        'App/AppDelegate.m',
+        'App/ViewController.h',
+        'App/ViewController.m',
+        'App/main.m',
+      ],
+      'link_settings': {
+        'libraries': [
+          '$(SDKROOT)/System/Library/Frameworks/Foundation.framework',
+          '$(SDKROOT)/System/Library/Frameworks/UIKit.framework',
+        ],
+      },
+      'xcode_settings': {
+        'INFOPLIST_FILE': 'App/Info.plist',
+      },
+    },
+    {
+      'target_name': 'app_tests',
+      'type': 'loadable_module',
+      'mac_xctest_bundle': 1,
+      'sources': [
+        'AppTests/AppTests.m',
+      ],
+      'dependencies': [
+        'app_under_test'
+      ],
+      'link_settings': {
+        'libraries': [
+          '$(SDKROOT)/System/Library/Frameworks/Foundation.framework',
+        ],
+      },
+      'xcode_settings': {
+        'WRAPPER_EXTENSION': 'xctest',
+        'INFOPLIST_FILE': 'AppTests/Info.plist',
+        'BUNDLE_LOADER': '$(BUILT_PRODUCTS_DIR)/app_under_test.app/app_under_test',
+        'TEST_HOST': '$(BUNDLE_LOADER)',
+      },
+    },
+  ],
+}