head version of chromium to attempt ios git build fix

BUG=libyuv:465
TESTED=try bots
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/57599005.

DEPS

@@ -6,7 +6,7 @@ vars = {
 
   # Roll the Chromium Git hash to pick up newer versions of all the
   # dependencies and tools linked to in setup_links.py.
-  'chromium_revision': '3dba19a90208ee9c5890cffda0490c517cbdf43e',
+  'chromium_revision': '148a3f6415dd7f064ff9637832275e79b5deee5e',
 }
 
 hooks = [