mac: Turn style plugin on by default.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/7922006

git-svn-id: http://src.chromium.org/svn/trunk/src/build@101494 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

common.gypi

@@ -214,9 +214,10 @@
       'enable_webrtc%': 1,
 
       'conditions': [
-        # Use Skia as WebKit renderer on Mac
         ['OS=="mac"', {
           'use_skia%': 0,
+          # Mac uses clang by default, so turn on the plugin as well.
+          'clang_use_chrome_plugins%': 1,
         }, {
           'use_skia%': 1,
         }],