gpu: Add GpuFence framework.

gpu/BUILD.gn

 # 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.
 
 import("//testing/libfuzzer/fuzzer_test.gni")
 import("//testing/test.gni")
 import("//build/config/ui.gni")
 
 config("gpu_implementation") {
   defines = [ "GPU_IMPLEMENTATION" ]
@@ skipping 122 matching lines @@
     "command_buffer/tests/gl_copy_tex_image_2d_workaround_unittest.cc",
     "command_buffer/tests/gl_copy_texture_CHROMIUM_unittest.cc",
     "command_buffer/tests/gl_cube_map_texture_unittest.cc",
     "command_buffer/tests/gl_depth_texture_unittest.cc",
     "command_buffer/tests/gl_deschedule_unittest.cc",
     "command_buffer/tests/gl_dynamic_config_unittest.cc",
     "command_buffer/tests/gl_ext_blend_func_extended_unittest.cc",
     "command_buffer/tests/gl_ext_multisample_compatibility_unittest.cc",
     "command_buffer/tests/gl_ext_srgb_unittest.cc",
     "command_buffer/tests/gl_fence_sync_unittest.cc",
+    "command_buffer/tests/gl_gpu_fence_unittest.cc",
     "command_buffer/tests/gl_gpu_memory_buffer_unittest.cc",
     "command_buffer/tests/gl_iosurface_readback_workaround_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_map_buffer_range_unittest.cc",
     "command_buffer/tests/gl_native_gmb_backbuffer_unittest.cc",
     "command_buffer/tests/gl_pointcoord_unittest.cc",
     "command_buffer/tests/gl_program_unittest.cc",
     "command_buffer/tests/gl_query_unittest.cc",
@@ skipping 235 matching lines @@
     "//ui/gfx/geometry",
     "//ui/gl",
     "//ui/gl:test_support",
   ]
 
   libfuzzer_options = [
     "max_len=16384",
     "use_traces=1",
   ]
 }