Isolate check_internal.py to the .gypi files that need it.

build/common.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.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 1016 matching lines @@
         'directx_sdk_path%': '<(directx_sdk_default_path)',
       }, {
         'directx_sdk_path%': '$(DXSDK_DIR)',
       }],
       ['OS=="win"', {
         'windows_driver_kit_path%': '$(WDK_DIR)',
         # Set the python arch to prevent conflicts with pyauto on Win64 build.
         # TODO(jschuh): crbug.com/177664 Investigate Win64 pyauto build.
         'python_arch%': 'ia32',
       }],
-      # If use_official_google_api_keys is already set (to 0 or 1), we
-      # do none of the implicit checking.  If it is set to 1 and the
-      # internal keys file is missing, the build will fail at compile
-      # time.  If it is set to 0 and keys are not provided by other
-      # means, a warning will be printed at compile time.
-      ['use_official_google_api_keys==2', {
-        'use_official_google_api_keys%':
-            '<!(python <(DEPTH)/google_apis/build/check_internal.py <(DEPTH)/google_apis/internal/google_chrome_api_keys.h)',
-      }],
       ['os_posix==1 and OS!="mac" and OS!="ios"', {
         # Figure out the python architecture to decide if we build pyauto.
         'python_arch%': '<!(<(DEPTH)/build/linux/python_arch.sh <(sysroot)/usr/<(system_libdir)/libpython<(python_ver).so.1.0)',
         'conditions': [
           # TODO(glider): set clang to 1 earlier for ASan and TSan builds so
           # that it takes effect here.
           ['clang==0 and asan==0 and tsan==0', {
             # This will set gcc_version to XY if you are running gcc X.Y.*.
             # This is used to tweak build flags for gcc 4.5.
             'gcc_version%': '<!(python <(DEPTH)/build/compiler_version.py)',
@@ skipping 3044 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }