Make all google_apis build on Win64

BUG=166496
BUG=167187
TBR=joi

Review URL: https://chromiumcodereview.appspot.com/11818045

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@176025 0039d316-1c4b-4281-b951-d872f2087c98

google_apis/google_apis.gyp

@@ -86,6 +86,8 @@
         'google_api_keys.cc',
         'google_api_keys.h',
       ],
+      # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+      'msvs_disabled_warnings': [4267, ],
     },
   ],
 }