Make //gpu/* pass gn check (and make it gn checked).

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.
 
 # GYP-to-GN project mappings:
 #
 #  gpu.gyp:command_buffer_client => //gpu/command_buffer/client
 #
 #  gpu.gyp:command_buffer_common => //gpu/command_buffer/common
 #
@@ skipping 93 matching lines @@
   defines = [ "GL_GLEXT_PROTOTYPES" ]
 
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
   deps = [
     ":gpu",
     ":test_support",
     "//base",
     "//base/test:test_support",
     "//base/third_party/dynamic_annotations",
+    "//gpu/command_buffer/client:gles2_c_lib",
+    "//gpu/command_buffer/client:gles2_implementation",
+    "//gpu/command_buffer/common:gles2_utils",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/angle:translator",
     "//ui/gfx",
     "//ui/gfx:test_support",
     "//ui/gfx/geometry",
     "//ui/gl",
-    "//gpu/command_buffer/common:gles2_utils",
-    "//gpu/command_buffer/client:gles2_c_lib",
-    "//gpu/command_buffer/client:gles2_implementation",
   ]
 
   libs = []
 
   if (is_android) {
     deps += [ "//testing/android/native_test:native_test_native_code" ]
     libs += [ "android" ]
   }
 
   # TODO(GYP)
@@ skipping 21 matching lines @@
     "command_buffer/client/vertex_array_object_manager_unittest.cc",
     "command_buffer/common/bitfield_helpers_test.cc",
     "command_buffer/common/command_buffer_mock.cc",
     "command_buffer/common/command_buffer_mock.h",
     "command_buffer/common/command_buffer_shared_test.cc",
     "command_buffer/common/debug_marker_manager_unittest.cc",
     "command_buffer/common/gles2_cmd_format_test.cc",
     "command_buffer/common/gles2_cmd_format_test_autogen.h",
     "command_buffer/common/gles2_cmd_utils_unittest.cc",
     "command_buffer/common/id_allocator_test.cc",
-    "command_buffer/common/trace_event.h",
     "command_buffer/common/unittest_main.cc",
     "command_buffer/service/async_pixel_transfer_delegate_mock.cc",
     "command_buffer/service/async_pixel_transfer_delegate_mock.h",
     "command_buffer/service/async_pixel_transfer_manager_mock.cc",
     "command_buffer/service/async_pixel_transfer_manager_mock.h",
     "command_buffer/service/buffer_manager_unittest.cc",
     "command_buffer/service/cmd_parser_test.cc",
     "command_buffer/service/command_buffer_service_unittest.cc",
     "command_buffer/service/common_decoder_unittest.cc",
     "command_buffer/service/context_group_unittest.cc",
     "command_buffer/service/feature_info_unittest.cc",
     "command_buffer/service/framebuffer_manager_unittest.cc",
-    "command_buffer/service/gl_context_mock.cc",
-    "command_buffer/service/gl_context_mock.h",
     "command_buffer/service/gl_surface_mock.cc",
     "command_buffer/service/gl_surface_mock.h",
     "command_buffer/service/gles2_cmd_decoder_unittest.cc",
     "command_buffer/service/gles2_cmd_decoder_unittest.h",
     "command_buffer/service/gles2_cmd_decoder_unittest_0_autogen.h",
     "command_buffer/service/gles2_cmd_decoder_unittest_1.cc",
     "command_buffer/service/gles2_cmd_decoder_unittest_1_autogen.h",
     "command_buffer/service/gles2_cmd_decoder_unittest_2.cc",
     "command_buffer/service/gles2_cmd_decoder_unittest_2_autogen.h",
     "command_buffer/service/gles2_cmd_decoder_unittest_3.cc",
     "command_buffer/service/gles2_cmd_decoder_unittest_3_autogen.h",
     "command_buffer/service/gles2_cmd_decoder_unittest_async_pixel.cc",
     "command_buffer/service/gles2_cmd_decoder_unittest_attribs.cc",
     "command_buffer/service/gles2_cmd_decoder_unittest_base.cc",
     "command_buffer/service/gles2_cmd_decoder_unittest_base.h",
     "command_buffer/service/gles2_cmd_decoder_unittest_buffers.cc",
-    "command_buffer/service/gles2_cmd_decoder_unittest_context_lost.cc",
     "command_buffer/service/gles2_cmd_decoder_unittest_context_state.cc",
     "command_buffer/service/gles2_cmd_decoder_unittest_drawing.cc",
     "command_buffer/service/gles2_cmd_decoder_unittest_extensions.cc",
     "command_buffer/service/gles2_cmd_decoder_unittest_framebuffers.cc",
     "command_buffer/service/gles2_cmd_decoder_unittest_programs.cc",
     "command_buffer/service/gles2_cmd_decoder_unittest_textures.cc",
     "command_buffer/service/gles2_cmd_decoder_unittest_valuebuffer.cc",
     "command_buffer/service/gpu_scheduler_unittest.cc",
     "command_buffer/service/gpu_service_test.cc",
     "command_buffer/service/gpu_service_test.h",
@@ skipping 32 matching lines @@
   ]
 
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
   deps = [
     ":gpu",
     ":test_support",
     "//base",
     "//base/test:test_support",
     "//base/third_party/dynamic_annotations",
+    "//gpu/command_buffer/client:gles2_c_lib",
+    "//gpu/command_buffer/client:gles2_implementation",
+    "//gpu/command_buffer/common:gles2_utils",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/angle:translator",
     "//ui/gfx",
     "//ui/gfx:test_support",
     "//ui/gfx/geometry",
     "//ui/gl",
-    "//gpu/command_buffer/common:gles2_utils",
-    "//gpu/command_buffer/client:gles2_c_lib",
-    "//gpu/command_buffer/client:gles2_implementation",
+    "//ui/gl:gl_unittest_utils",
   ]
 }
 
 test("gpu_perftests") {
   sources = [
     "perftests/measurements.cc",
     "perftests/run_all_tests.cc",
     "perftests/texture_upload_perftest.cc",
   ]
 
@@ skipping 38 matching lines @@
     libs = [ "GL" ]
 
     configs += [ "//build/config/linux:x11" ]
 
     deps = [
       "//base",
       "//ui/gl",
     ]
   }
 }