Move GPU device/driver info related code from content to gpu.

content/public/common/gpu_info.cc

-// Copyright (c) 2012 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 "content/public/common/gpu_info.h"
-
-namespace content {
-
-GPUInfo::GPUDevice::GPUDevice()
-    : vendor_id(0),
-      device_id(0) {
-}
-
-GPUInfo::GPUDevice::~GPUDevice() { }
-
-GPUInfo::GPUInfo()
-    : finalized(false),
-      optimus(false),
-      amd_switchable(false),
-      lenovo_dcute(false),
-      can_lose_context(false),
-      gpu_accessible(true),
-      software_rendering(false),
-      sandboxed(false) {
-}
-
-GPUInfo::~GPUInfo() { }
-
-}  // namespace content