Update all users of base::Version to explicitly specify the namespace, and clean up the header.

gpu/config/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 "gpu/config/gpu_info.h"
 
 namespace {
 
 void EnumerateGPUDevice(gpu::GPUInfo::Enumerator* enumerator,
                         const gpu::GPUInfo::GPUDevice& device) {
@@ skipping 30 matching lines @@
 
 GPUInfo::~GPUInfo() { }
 
 void GPUInfo::EnumerateFields(Enumerator* enumerator) const {
   struct GPUInfoKnownFields {
     bool finalized;
     base::TimeDelta initialization_time;
     bool optimus;
     bool amd_switchable;
     bool lenovo_dcute;
-    Version display_link_version;
+    base::Version display_link_version;
     GPUDevice gpu;
     std::vector<GPUDevice> secondary_gpus;
     uint64 adapter_luid;
     std::string driver_vendor;
     std::string driver_version;
     std::string driver_date;
     std::string pixel_shader_version;
     std::string vertex_shader_version;
     std::string machine_model;
     std::string gl_version;
@@ skipping 58 matching lines @@
       static_cast<int>(gl_reset_notification_strategy));
   enumerator->AddBool("can_lose_context", can_lose_context);
   // TODO(kbr): add performance_stats.
   enumerator->AddBool("softwareRendering", software_rendering);
   enumerator->AddBool("sandboxed", sandboxed);
   // TODO(kbr): add dx_diagnostics on Windows.
   enumerator->EndAuxAttributes();
 }
 
 }  // namespace gpu