Small fixes for auto generating Android.mk

Turn off -Wno-c++11-extensions for Android. The Android framework does
not support this flag. Using it gives a bunch of warnings when building,
so remove it.

Remove skia_chrome_utils from framework. They are experimental and not
used by Android.

BUG=skia:1975
R=djsollen@google.com, robertphillips@google.com

Author: scroggo@google.com

Review URL: https://codereview.chromium.org/164793002

git-svn-id: http://skia.googlecode.com/svn/trunk@13475 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gyp/common_variables.gypi b/gyp/common_variables.gypi
index d02d465..c3ec7d8 100644
--- a/gyp/common_variables.gypi
+++ b/gyp/common_variables.gypi
@@ -57,8 +57,10 @@
       'conditions': [
         [ 'skia_android_framework == 1', {
           'skia_os%': 'android',
+          'skia_chrome_utils%': 0,
         }, {
           'skia_os%': '<(skia_os)',
+          'skia_chrome_utils%': 1,
         }],
         [ 'skia_os == "win"', {
           'os_posix%': 0,
@@ -99,7 +101,6 @@
       'skia_resource_cache_mb_limit%': 0,
       'skia_resource_cache_count_limit%': 0,
       'skia_angle%': 0,
-      'skia_chrome_utils%': 1,
       'skia_directwrite%': 0,
       'skia_gpu%': 1,
       'skia_osx_deployment_target%': '',