GN build: GPU work, Windows compile, "check" errors

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.
 
-config("sizet_truncations") {
-  if (is_win) {
-    # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-    cflags = [ "/wd4267" ]  # size_t to int truncation.
-  }
-}
-
-gles2_c_lib_source_files = [
-  "command_buffer/client/gles2_c_lib.cc",
-  "command_buffer/client/gles2_c_lib_autogen.h",
-  "command_buffer/client/gles2_c_lib_export.h",
-  "command_buffer/client/gles2_lib.h",
-  "command_buffer/client/gles2_lib.cc",
-]
-
-component("gles2_implementation") {
-  sources = [
-    "command_buffer/client/buffer_tracker.cc",
-    "command_buffer/client/buffer_tracker.h",
-    "command_buffer/client/client_context_state.h",
-    "command_buffer/client/client_context_state.cc",
-    "command_buffer/client/client_context_state_autogen.h",
-    "command_buffer/client/client_context_state_impl_autogen.h",
-    "command_buffer/client/gles2_impl_export.h",
-    "command_buffer/client/gles2_implementation_autogen.h",
-    "command_buffer/client/gles2_implementation.cc",
-    "command_buffer/client/gles2_implementation.h",
-    "command_buffer/client/gles2_implementation_impl_autogen.h",
-    "command_buffer/client/gles2_interface.h",
-    "command_buffer/client/gles2_trace_implementation_autogen.h",
-    "command_buffer/client/gles2_trace_implementation.cc",
-    "command_buffer/client/gles2_trace_implementation.h",
-    "command_buffer/client/gles2_trace_implementation_impl_autogen.h",
-    "command_buffer/client/gpu_memory_buffer_factory.h",
-    "command_buffer/client/gpu_memory_buffer_tracker.cc",
-    "command_buffer/client/gpu_memory_buffer_tracker.h",
-    "command_buffer/client/program_info_manager.cc",
-    "command_buffer/client/program_info_manager.h",
-    "command_buffer/client/query_tracker.cc",
-    "command_buffer/client/query_tracker.h",
-    "command_buffer/client/share_group.cc",
-    "command_buffer/client/share_group.h",
-    "command_buffer/client/vertex_array_object_manager.cc",
-    "command_buffer/client/vertex_array_object_manager.h",
-  ]
-  defines = [ "GLES2_IMPL_IMPLEMENTATION" ]
-  configs += [ ":sizet_truncations" ]
-  all_dependent_configs = [ "//third_party/khronos:khronos_headers" ]
-
-  deps = [
-    ":gles2_cmd_helper",
-    "//base",
-    "//gpu/command_buffer:gles2_utils",
-    "//ui/gfx/geometry",
-    "//ui/gl",
-  ]
-}
-
-component("gles2_c_lib") {
-  sources = gles2_c_lib_source_files
-  defines = [ "GLES2_C_LIB_IMPLEMENTATION" ]
-  configs += [ ":sizet_truncations" ]
-
-  deps = [
-    ":command_buffer_client",
-    ":gles2_implementation",
-    "//base",
-    "//base/third_party/dynamic_annotations",
-    "//gpu/command_buffer:gles2_utils",
-  ]
-}
-
-source_set("gles2_cmd_helper") {
-  sources = [
-    "command_buffer/client/gles2_cmd_helper.cc",
-    "command_buffer/client/gles2_cmd_helper.h",
-    "command_buffer/client/gles2_cmd_helper_autogen.h",
-  ]
-
-  configs += [ ":sizet_truncations" ]
-  deps = [ ":command_buffer_client" ]
-}
-
-source_set("command_buffer_client") {
-  sources = [
-    "command_buffer/client/cmd_buffer_helper.cc",
-    "command_buffer/client/cmd_buffer_helper.h",
-    "command_buffer/client/fenced_allocator.cc",
-    "command_buffer/client/fenced_allocator.h",
-    "command_buffer/client/gpu_control.h",
-    "command_buffer/client/mapped_memory.cc",
-    "command_buffer/client/mapped_memory.h",
-    "command_buffer/client/ring_buffer.cc",
-    "command_buffer/client/ring_buffer.h",
-    "command_buffer/client/transfer_buffer.cc",
-    "command_buffer/client/transfer_buffer.h",
-  ]
-
-  configs += [ ":sizet_truncations" ]
-  all_dependent_configs = [ "//third_party/khronos:khronos_headers" ]
-
-  deps = [
-    ":command_buffer_common",
-  ]
-}
-
-source_set("command_buffer_common") {
-  sources = [
-    "command_buffer/common/bitfield_helpers.h",
-    "command_buffer/common/buffer.cc",
-    "command_buffer/common/buffer.h",
-    "command_buffer/common/capabilities.cc",
-    "command_buffer/common/capabilities.h",
-    "command_buffer/common/cmd_buffer_common.cc",
-    "command_buffer/common/cmd_buffer_common.h",
-    "command_buffer/common/command_buffer.h",
-    "command_buffer/common/constants.h",
-    "command_buffer/common/debug_marker_manager.cc",
-    "command_buffer/common/debug_marker_manager.h",
-    "command_buffer/common/gles2_cmd_format.cc",
-    "command_buffer/common/gles2_cmd_format.h",
-    "command_buffer/common/gles2_cmd_format_autogen.h",
-    "command_buffer/common/gles2_cmd_ids.h",
-    "command_buffer/common/gles2_cmd_ids_autogen.h",
-    "command_buffer/common/id_allocator.cc",
-    "command_buffer/common/id_allocator.h",
-    "command_buffer/common/mailbox.cc",
-    "command_buffer/common/mailbox.h",
-    "command_buffer/common/mailbox_holder.cc",
-    "command_buffer/common/mailbox_holder.h",
-    "command_buffer/common/thread_local.h",
-    "command_buffer/common/time.h",
-  ]
-
-  all_dependent_configs = [ "//third_party/khronos:khronos_headers" ]
-
-  deps = [
-    "//base",
-    "//gpu/command_buffer:gles2_utils",
-  ]
-}
+# GYP-to-GN project mappings:
+#
+#  gpu.gyp:command_buffer_client => //gpu/command_buffer/client
+#
+#  gpu.gyp:command_buffer_common => //gpu/command_buffer/common
+#
+#  gpu.gyp:gles2_cmd_helper => //gpu/command_buffer/client:gles2_cmd_helper
+#
+#  gpu.gyp:gles2_c_lib => //gpu/command_buffer/client:cles2_c_lib
+#
+#  gpu.gyp:gles2_implementation =>
+#      //gpu_command_buffer/client:gles2_implementation
+#
+#  command_buffer/command_buffer.gyp:gles2_utils =>
+#     //gpu/command_buffer/common
+#     (Merged in to here because the separate file exists in GYP only to break
+#     a .gyp file dependency cycle which GN doesn't have.)