Pull in various gpu/command_buffer fixes from chromium

gpu/command_buffer/service/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("//build/config/ui.gni")
 import("//third_party/protobuf/proto_library.gni")
 
 source_set("service") {
   sources = [
     "async_pixel_transfer_delegate.cc",
@@ skipping 44 matching lines @@
     "gles2_cmd_copy_texture_chromium.h",
     "gles2_cmd_decoder.cc",
     "gles2_cmd_decoder.h",
     "gles2_cmd_decoder_autogen.h",
     "gles2_cmd_validation.cc",
     "gles2_cmd_validation.h",
     "gles2_cmd_validation_autogen.h",
     "gles2_cmd_validation_implementation_autogen.h",
     "gpu_scheduler.cc",
     "gpu_scheduler.h",
-    "gpu_scheduler_mock.h",
     "gpu_state_tracer.cc",
     "gpu_state_tracer.h",
     "gpu_switches.cc",
     "gpu_switches.h",
     "gpu_tracer.cc",
     "gpu_tracer.h",
     "id_manager.cc",
     "id_manager.h",
     "image_factory.cc",
     "image_factory.h",
     "image_manager.cc",
     "image_manager.h",
     "in_process_command_buffer.cc",
     "in_process_command_buffer.h",
     "logger.cc",
     "logger.h",
     "mailbox_manager.h",
     "mailbox_manager_impl.cc",
     "mailbox_manager_impl.h",
     "mailbox_manager_sync.cc",
     "mailbox_manager_sync.h",
     "memory_program_cache.cc",
     "memory_program_cache.h",
-    "mocks.h",
     "program_cache.cc",
     "program_cache.h",
     "program_manager.cc",
     "program_manager.h",
     "query_manager.cc",
     "query_manager.h",
     "renderbuffer_manager.cc",
     "renderbuffer_manager.h",
     "shader_manager.cc",
     "shader_manager.h",
@@ skipping 28 matching lines @@
   include_dirs = [ "//third_party/mesa/src/include" ]
 
   public_deps = [
     "//gpu/command_buffer/common",
   ]
   deps = [
     ":disk_cache_proto",
     "//base",
     "//base/third_party/dynamic_annotations",
     "//crypto",
+    "//gpu/config",
     "//third_party/angle:translator",
     "//third_party/protobuf:protobuf_lite",
     "//third_party/re2",
     "//third_party/smhasher:cityhash",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//ui/gl",
   ]
 
   if (ui_compositor_image_transport) {
@@ skipping 12 matching lines @@
     configs -= [ "//build/config/compiler:optimize" ]
     configs += [ "//build/config/compiler:optimize_max" ]
   }
 }
 
 proto_library("disk_cache_proto") {
   sources = [
     "disk_cache_proto.proto",
   ]
 }