Add command_buffer_gles2

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 31 matching lines @@
   public_deps = [
     "//gpu/command_buffer/client:client_sources",
     "//gpu/command_buffer/client:gles2_cmd_helper_sources",
     "//gpu/command_buffer/common:common_sources",
     "//gpu/command_buffer/service:service_sources",
     "//gpu/config:config_sources",
     "//gpu/ipc:ipc_sources",
   ]
 }
 
+# GYP version: //gpu/gpu.gyp:command_buffer_gles2
+shared_library("command_buffer_gles2") {
+  sources = [
+    # TODO(hendrikw): Move egl out of gles2_conform_support.
+    "gles2_conform_support/egl/config.cc",
+    "gles2_conform_support/egl/config.h",
+    "gles2_conform_support/egl/display.cc",
+    "gles2_conform_support/egl/display.h",
+    "gles2_conform_support/egl/egl.cc",
+    "gles2_conform_support/egl/surface.cc",
+    "gles2_conform_support/egl/surface.h",
+  ]
+
+  deps = [
+    "//base",
+    "//gpu/command_buffer/client:gles2_c_lib",
+    "//gpu/command_buffer/client:gles2_implementation",
+    "//gpu/command_buffer/service",
+    "//ui/gl:gl",
+  ]
+
+  if (!is_component_build) {

[Nico, 2015/12/21 16:48:46]

Why is this conditional here? This seems wrong at first blush. Why are these
component-build deps only? If you need to do something like this, please add a
comment that explains why.

+    deps += [
+      "//gpu/command_buffer/client:client_sources",
+      "//gpu/command_buffer/client:gles2_cmd_helper_sources",
+    ]
+  }
+
+  defines = [
+    "COMMAND_BUFFER_GLES_LIB_SUPPORT_ONLY",
+    "EGLAPIENTRY=",
+  ]
+  if (current_os == "win") {
+    defines += [ "EGLAPI=__declspec(dllexport)" ]
+  } else {
+    defines += [ "EGLAPI=__attribute__((visibility(\"default\")))" ]
+  }
+}
+
 source_set("test_support") {
   testonly = true
   sources = [
     "command_buffer/client/gles2_interface_stub.cc",
     "command_buffer/client/gles2_interface_stub.h",
     "command_buffer/service/error_state_mock.cc",
     "command_buffer/service/gles2_cmd_decoder_mock.cc",
   ]
 
   public_deps = [
@@ skipping 272 matching lines @@
 
   deps = [
     "//base/test:test_support",
     "//testing/gmock",
     "//testing/gtest",
 
     # TODO(crbug.com/519778): This needs to be implemented.
     # "//third_party/angle:end_to_end_tests",
   ]
 }