ozone: Introduce ClientPixmap and ClientPixmapFactory for non-GPU processes.

ui/ozone/platform/egltest/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("//tools/generate_library_loader/generate_library_loader.gni")
 import("//ui/ozone/ozone.gni")
 
 source_set("egltest") {
   sources = [
+    "client_pixmap_manager_egltest.cc",
+    "client_pixmap_manager_egltest.h",
     "ozone_platform_egltest.cc",
     "ozone_platform_egltest.h",
   ]
 
   deps = [
     ":eglplatform_shim",
     "//base",
     "//ui/events/devices",
     "//ui/events/ozone:events_ozone_evdev",
     "//ui/events/ozone:events_ozone_layout",
@@ skipping 33 matching lines @@
     output_extension = "so.1"
 
     sources = [
       "eglplatform_shim.h",
       "eglplatform_shim_xeleven.cc",
     ]
 
     configs += [ "//build/config/linux:x11" ]
   }
 }