Add initial support for NV_path_rendering extension to gpu command buffer

gpu/gpu.gyp

 # Copyright (c) 2012 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': {
     'nacl_win64_target': 0,
   },
   'includes': [
     'gpu_common.gypi',
@@ skipping 287 matching lines @@
       ],
       'defines': [
         'GLES2_C_LIB_IMPLEMENTATION',
         'GL_GLEXT_PROTOTYPES',
       ],
       'sources': [
         '<@(gles2_c_lib_source_files)',
         'command_buffer/tests/compressed_texture_test.cc',
         'command_buffer/tests/gl_bind_uniform_location_unittest.cc',
         'command_buffer/tests/gl_chromium_framebuffer_multisample_unittest.cc',
+        'command_buffer/tests/gl_chromium_nv_path_rendering_unittest.cc',
         'command_buffer/tests/gl_copy_texture_CHROMIUM_unittest.cc',
         'command_buffer/tests/gl_depth_texture_unittest.cc',
         'command_buffer/tests/gl_gpu_memory_buffer_unittest.cc',
         'command_buffer/tests/gl_lose_context_chromium_unittest.cc',
         'command_buffer/tests/gl_manager.cc',
         'command_buffer/tests/gl_manager.h',
         'command_buffer/tests/gl_pointcoord_unittest.cc',
         'command_buffer/tests/gl_program_unittest.cc',
         'command_buffer/tests/gl_query_unittest.cc',
         'command_buffer/tests/gl_readback_unittest.cc',
@@ skipping 264 matching lines @@
             'input_shlib_path': '<(SHARED_LIB_DIR)/<(SHARED_LIB_PREFIX)gl_tests<(SHARED_LIB_SUFFIX)',
           },
           'includes': [
             '../build/apk_test.gypi',
           ],
         },
       ],
     }],
   ],
 }