Turns on use_mojo=1 for windows.

BUG=353602
TEST=none
R=bradnelson@chromium.org, csharp@chromium.org, grt@chromium.org

Review URL: https://codereview.chromium.org/204023002

git-svn-id: http://src.chromium.org/svn/trunk/src/build@258288 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

common.gypi

@@ -837,6 +837,10 @@
           'remoting%': 0,
           'enable_printing%': 0,
         }],
+
+        ['OS=="win"', {
+          'use_mojo%': 1,
+        }],
       ],
 
       # Set this to 1 to enable use of concatenated impulse responses