Defered collect DirectX diagnostics until they are needed for about:gpu....

chrome/common/gpu_info.h

 // Copyright (c) 2006-2010 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.
 
 #ifndef CHROME_COMMON_GPU_INFO_H__
 #define CHROME_COMMON_GPU_INFO_H__
 #pragma once
 
 // Provides access to the GPU information for the system
 // on which chrome is currently running.
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/scoped_ptr.h"
 #include "base/time.h"
 #include "build/build_config.h"
 #include "chrome/common/dx_diag_node.h"
 
 class GPUInfo {
  public:
   GPUInfo();
   ~GPUInfo() {}
 
-  enum Progress {
+  enum Level {
     kUninitialized,
     kPartial,
+    kCompleting,
     kComplete,
   };
 
   // Returns whether this GPUInfo has been partially or fully initialized with
   // information.
-  Progress progress() const;
+  Level level() const;
 
   // The amount of time taken to get from the process starting to the message
   // loop being pumped.
   base::TimeDelta initialization_time() const;
 
   // Return the DWORD (uint32) representing the graphics card vendor id.
   uint32 vendor_id() const;
 
   // Return the DWORD (uint32) representing the graphics card device id.
   // Device ids are unique to vendor, not to one another.
@@ skipping 36 matching lines @@
   std::string gl_renderer() const;
 
   // Return the GL_EXTENSIONS string.
   // Return "" if we are not using OpenGL.
   std::string gl_extensions() const;
 
   // Return the device semantics, i.e. whether the Vista and Windows 7 specific
   // semantics are available.
   bool can_lose_context() const;
 
-  void SetProgress(Progress progress);
+  void SetLevel(Level level);
 
   void SetInitializationTime(const base::TimeDelta& initialization_time);
 
   void SetVideoCardInfo(uint32 vendor_id, uint32 device_id);
 
   void SetDriverInfo(const std::string& driver_vendor,
                      const std::string& driver_version);
 
   void SetShaderVersion(uint32 pixel_shader_version,
                         uint32 vertex_shader_version);
@@ skipping 11 matching lines @@
   void SetCanLoseContext(bool can_lose_context);
 
 #if defined(OS_WIN)
   // The information returned by the DirectX Diagnostics Tool.
   const DxDiagNode& dx_diagnostics() const;
 
   void SetDxDiagnostics(const DxDiagNode& dx_diagnostics);
 #endif
 
  private:
-  Progress progress_;
+  Level level_;
   base::TimeDelta initialization_time_;
   uint32 vendor_id_;
   uint32 device_id_;
   std::string driver_vendor_;
   std::string driver_version_;
   uint32 pixel_shader_version_;
   uint32 vertex_shader_version_;
   uint32 gl_version_;
   std::string gl_version_string_;
   std::string gl_vendor_;
   std::string gl_renderer_;
   std::string gl_extensions_;
   bool can_lose_context_;
 
 #if defined(OS_WIN)
   DxDiagNode dx_diagnostics_;
 #endif
 };
 
 #endif  // CHROME_COMMON_GPU_INFO_H__