Show ChromeOS bios firmware in about dialog.

chrome/browser/chromeos/version_loader.h

 // Copyright (c) 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_BROWSER_CHROMEOS_VERSION_LOADER_H_
 #define CHROME_BROWSER_CHROMEOS_VERSION_LOADER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 10 matching lines @@
 // ChromeOSVersionLoader callback to a method of your choice with the version
 // (or an empty string if the version couldn't be found).
 // To use ChromeOSVersionLoader do the following:
 //
 // . In your class define a member field of type chromeos::VersionLoader and
 //   CancelableRequestConsumerBase.
 // . Define the callback method, something like:
 //   void OnGetChromeOSVersion(chromeos::VersionLoader::Handle,
 //                             std::string version);
 // . When you want the version invoke:  loader.GetVersion(&consumer, callback);
+//
+// This class also provides the ability to load the bios firmware using
+//   loader.GetFirmware(&consumer, callback);
 class VersionLoader : public CancelableRequestProvider {
  public:
   VersionLoader();
 
   enum VersionFormat {
     VERSION_SHORT,
     VERSION_SHORT_WITH_DATE,
     VERSION_FULL,
   };
 
   // Signature
   typedef Callback2<Handle, std::string>::Type GetVersionCallback;
+  typedef CancelableRequest<GetVersionCallback> GetVersionRequest;
 
-  typedef CancelableRequest<GetVersionCallback> GetVersionRequest;
+  typedef Callback2<Handle, std::string>::Type GetFirmwareCallback;
+  typedef CancelableRequest<GetFirmwareCallback> GetFirmwareRequest;
 
   // Asynchronously requests the version.
   // If |full_version| is true version string with extra info is extracted,
   // otherwise it's in short format x.x.xx.x.
   Handle GetVersion(CancelableRequestConsumerBase* consumer,
                     GetVersionCallback* callback,
                     VersionFormat format);
 
+  Handle GetFirmware(CancelableRequestConsumerBase* consumer,
+                     GetFirmwareCallback* callback);
+
   static const char kFullVersionPrefix[];
   static const char kVersionPrefix[];
+  static const char kFirmwarePrefix[];
 
  private:
   FRIEND_TEST_ALL_PREFIXES(VersionLoaderTest, ParseFullVersion);
   FRIEND_TEST_ALL_PREFIXES(VersionLoaderTest, ParseVersion);
+  FRIEND_TEST_ALL_PREFIXES(VersionLoaderTest, ParseFirmware);
 
   // VersionLoader calls into the Backend on the file thread to load
   // and extract the version.
   class Backend : public base::RefCountedThreadSafe<Backend> {
    public:
     Backend() {}
 
     // Calls ParseVersion to get the version # and notifies request.
     // This is invoked on the file thread.
     // If |full_version| is true then extra info is passed in version string.
     void GetVersion(scoped_refptr<GetVersionRequest> request,
                     VersionFormat format);
 
+    // Calls ParseFirmware to get the firmware # and notifies request.
+    // This is invoked on the file thread.
+    void GetFirmware(scoped_refptr<GetFirmwareRequest> request);
+
    private:
     friend class base::RefCountedThreadSafe<Backend>;
 
     ~Backend() {}
 
     DISALLOW_COPY_AND_ASSIGN(Backend);
   };
 
   // Extracts the version from the file.
   // |prefix| specifies what key defines version data.
   static std::string ParseVersion(const std::string& contents,
                                   const std::string& prefix);
 
+  // Extracts the firmware from the file.
+  static std::string ParseFirmware(const std::string& contents);
+
   scoped_refptr<Backend> backend_;
 
   DISALLOW_COPY_AND_ASSIGN(VersionLoader);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_VERSION_LOADER_H_