Add Skia to the GN build.

base/BUILD.gn

 # Copyright (c) 2013 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")
 
 component("base") {
   sources = [
     "third_party/dmg_fp/dmg_fp.h",
     "third_party/dmg_fp/g_fmt.cc",
@@ skipping 406 matching lines @@
     "process/kill.h",
     "process/kill_mac.cc",
     "process/kill_posix.cc",
     "process/kill_win.cc",
     "process/launch.cc",
     "process/launch.h",
     "process/launch_ios.cc",
     "process/launch_mac.cc",
     "process/launch_posix.cc",
     "process/launch_win.cc",
+    "process/memory.cc",
     "process/memory.h",
     "process/memory_linux.cc",
     "process/memory_mac.mm",
     "process/memory_win.cc",
     "process/process.h",
     "process/process_handle_freebsd.cc",
     "process/process_handle_linux.cc",
     "process/process_handle_mac.cc",
     "process/process_handle_openbsd.cc",
     "process/process_handle_posix.cc",
@@ skipping 461 matching lines @@
   #    # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
   #    'msvs_disabled_warnings': [
   #      4267,
   #    ],
   #  }],
   #],
   #'variables': {
   #  'optimize': 'max',
   #},
 }