Make crypto build on Win64

crypto/crypto.gyp

Index: crypto/crypto.gyp
===================================================================
--- crypto/crypto.gyp	(revision 175573)
+++ crypto/crypto.gyp	(working copy)
@@ -129,6 +129,10 @@
             'capi_util.cc',
           ],
         }],
+        [ 'OS == "win"', {
+          # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+          'msvs_disabled_warnings': [4267, ],
+        }],
         [ 'use_openssl==1', {
             # TODO(joth): Use a glob to match exclude patterns once the
             #             OpenSSL file set is complete.
@@ -319,6 +323,10 @@
             '../third_party/nss/nss.gyp:nspr',
           ],
         }],
+        [ 'OS == "win"', {
+          # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+          'msvs_disabled_warnings': [4267, ],
+        }],
         [ 'use_openssl==1', {
           'sources!': [
             'nss_util_unittest.cc',