Parse GL_VERSION incorrectly when version string is without release_number

ui/gl/gl_tests.gyp

 # Copyright 2015 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
       'target_name': 'gl_unittests',
       'type': '<(gtest_target_type)',
       'sources': [
         'test/run_all_unittests.cc',
         'gpu_timing_unittest.cc',
         'gl_api_unittest.cc',
         'gl_image_ref_counted_memory_unittest.cc',
         'gl_image_shared_memory_unittest.cc',
+        'gl_version_info_unittest.cc',
       ],
       'include_dirs': [
         '<(DEPTH)/third_party/khronos',
       ],
       'dependencies': [
         '<(DEPTH)/base/base.gyp:base',
         '<(DEPTH)/base/base.gyp:test_support_base',
         '<(DEPTH)/testing/gmock.gyp:gmock',
         '<(DEPTH)/testing/gtest.gyp:gtest',
         '<(DEPTH)/third_party/mesa/mesa.gyp:osmesa',
@@ skipping 98 matching lines @@
               'dependencies': [
                 '<(DEPTH)/tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }