Disabling automation on Android.

Not compiling the automation code on Android where it is not used.

BUG=None
TEST=All targets should still build on Android.


Review URL: https://chromiumcodereview.appspot.com/12045031

git-svn-id: http://src.chromium.org/svn/trunk/src/build@178375 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

common.gypi

@@ -487,6 +487,7 @@
         }],
 
         ['OS=="android"', {
+          'enable_automation%': 0,
           'enable_extensions%': 0,
           'enable_google_now%': 0,
           'enable_language_detection%': 0,