mojo: Reland "Convert gles2 to the new thunking system."

mojo/mojo_apps_js_unittests.isolate

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 {
   'includes': [
     '../third_party/icu/icu.isolate',
   ],
   'conditions': [
     ['OS=="win" or OS=="mac" or OS=="linux"', {
       'variables': {
@@ skipping 27 matching lines @@
     ['OS=="linux"', {
       'variables': {
         'isolate_dependency_tracked': [
           '<(PRODUCT_DIR)/lib/libmojo_test_support.so',
         ],
       },
     }],
     ['OS=="mac"', {
       'variables': {
         'isolate_dependency_tracked': [
-          '<(PRODUCT_DIR)/libmojo_gles2.dylib',
           '<(PRODUCT_DIR)/libmojo_test_support.dylib',
         ],
       },
     }],
   ],
 }