Make all base targets build on Win64

BUG=166496
BUG=167187

Review URL: https://chromiumcodereview.appspot.com/11825006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@175916 0039d316-1c4b-4281-b951-d872f2087c98

base/base.gyp

@@ -273,6 +273,12 @@
             '../build/linux/system.gyp:gtk',
           ],
         }],
+        ['OS == "win"', {
+          # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+          'msvs_disabled_warnings': [
+            4267,
+          ],
+        }],
       ],
       'export_dependent_settings': [
         'base',
@@ -711,6 +717,10 @@
             'threading/worker_pool_posix_unittest.cc',
             'message_pump_libevent_unittest.cc',
           ],
+          # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+          'msvs_disabled_warnings': [
+            4267,
+          ],
         }, {  # OS != "win"
           'dependencies': [
             '../third_party/libevent/libevent.gyp:libevent'

base/cpu_unittest.cc

@@ -17,7 +17,8 @@ TEST(CPU, RunExtendedInstructions) {
   // Retrieve the CPU information.
   base::CPU cpu;
 
-#if defined(OS_WIN)
+// TODO(jschuh): crbug.com/168866 Find a way to enable this on Win64.
+#if defined(OS_WIN) && !defined(_M_X64)
   ASSERT_TRUE(cpu.has_mmx());
 
   // Execute an MMX instruction.