gyp: <(GENERATOR) is now always ninja, so simplify some conditionals.

build/ios/mac_build.gypi

-# 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.
-
-# Xcode throws an error if an iOS target depends on a Mac OS X target. So
-# any place a utility program needs to be build and run, an action is
-# used to run ninja as script to work around this.
-# Example:
-# {
-#   'target_name': 'foo',
-#   'type': 'none',
-#   'variables': {
-#     # The name of a directory used for ninja. This cannot be shared with
-#     # another mac build.
-#     'ninja_output_dir': 'ninja-foo',
-#     # The full path to the location in which the ninja executable should be
-#     # placed. This cannot be shared with another mac build.
-#    'ninja_product_dir':
-#      '<(DEPTH)/xcodebuild/<(ninja_output_dir)/<(CONFIGURATION_NAME)',
-#     # The list of all the gyp files that contain the targets to run.
-#     're_run_targets': [
-#       'foo.gyp',
-#     ],
-#   },
-#   'includes': ['path_to/mac_build.gypi'],
-#   'actions': [
-#     {
-#       'action_name': 'compile foo',
-#       'inputs': [],
-#       'outputs': [],
-#       'action': [
-#         '<@(ninja_cmd)',
-#         # All the targets to build.
-#         'foo1',
-#         'foo2',
-#       ],
-#     },
-#   ],
-# }
-{
-  'variables': {
-    'variables': {
-     'parent_generator%': '<(GENERATOR)',
-    },
-    'parent_generator%': '<(parent_generator)',
-    # Common ninja command line flags.
-    'ninja_cmd': [
-      # Bounce through clean_env to clean up the environment so things
-      # set by the iOS build don't pollute the Mac build.
-      '<(DEPTH)/build/ios/clean_env.py',
-      # ninja must be found in the PATH.
-      'ADD_TO_PATH=<!(echo $PATH)',
-      'ninja',
-      '-C',
-      '<(ninja_product_dir)',
-    ],
-
-    # Common syntax to rerun gyp to generate the Mac projects.
-    're_run_gyp': [
-      'build/gyp_chromium',
-      '--depth=.',
-      # Don't use anything set for the iOS side of things.
-      '--ignore-environment',
-      # Generate for ninja
-      '--format=ninja',
-      # Generate files into xcodebuild/ninja
-      '-Goutput_dir=xcodebuild/<(ninja_output_dir)',
-      # nacl isn't in the iOS checkout, make sure it's turned off
-      '-Ddisable_nacl=1',
-      # Pass through the Mac SDK version.
-      '-Dmac_sdk=<(mac_sdk)',
-      '-Dparent_generator=<(parent_generator)',
-      '-DOS=mac',
-    ],
-
-    # Rerun gyp for each of the projects needed. This is what actually
-    # generates the projects on disk.
-    're_run_gyp_execution':
-      '<!(cd <(DEPTH) && <@(re_run_gyp) <@(re_run_targets))',
-  },
-  # Since these are used to generate things needed by other targets, make
-  # them hard dependencies so they are always built first.
-  'hard_dependency': 1,
-}