Move GPU messages to content. I've also switched the IPC structs to use the ...

chrome/common/gpu_info.cc

-// Copyright (c) 2011 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.
-
-#include "chrome/common/gpu_info.h"
-
-GPUInfo::GPUInfo()
-    : level(kUninitialized),
-      vendor_id(0),
-      device_id(0),
-      driver_vendor(""),
-      driver_version(""),
-      driver_date(""),
-      pixel_shader_version(0),
-      vertex_shader_version(0),
-      gl_version(0),
-      gl_version_string(""),
-      gl_vendor(""),
-      gl_renderer(""),
-      gl_extensions(""),
-      can_lose_context(false),
-      collection_error(false) {
-}
-
-GPUInfo::~GPUInfo() {
-}