Add Application version and OS info in android about version page.

chrome/browser/ui/android/android_about_app_info.cc

Index: chrome/browser/ui/android/android_about_app_info.cc
diff --git a/chrome/browser/ui/android/android_about_app_info.cc b/chrome/browser/ui/android/android_about_app_info.cc
new file mode 100644
index 0000000000000000000000000000000000000000..55ba36a2b6c4b4311820e803a6a2be2a36a39284
--- /dev/null
+++ b/chrome/browser/ui/android/android_about_app_info.cc
@@ -0,0 +1,44 @@
+// 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 "chrome/browser/ui/android/android_about_app_info.h"
+
+#include <string>
+
+#include "base/stringprintf.h"
+#include "base/sys_info.h"
+
+std::string AndroidAboutAppInfo::GetOsInfo() {
+  std::string android_info_str;
+
+  // Append information about the OS version.
+  int32 os_major_version = 0;
+  int32 os_minor_version = 0;
+  int32 os_bugfix_version = 0;
+  base::SysInfo::OperatingSystemVersionNumbers(&os_major_version,
+                                               &os_minor_version,
+                                               &os_bugfix_version);
+  base::StringAppendF(&android_info_str, "%d.%d.%d", os_major_version,
+                      os_minor_version, os_bugfix_version);
+
+  // Append information about the device.
+  bool semicolon_inserted = false;
+  std::string android_build_codename = base::SysInfo::GetAndroidBuildCodename();
+  std::string android_device_name = base::SysInfo::GetDeviceName();
+  if ("REL" == android_build_codename && android_device_name.size() > 0) {
+    android_info_str += "; " + android_device_name;
+    semicolon_inserted = true;
+  }
+
+  // Append the build ID.
+  std::string android_build_id = base::SysInfo::GetAndroidBuildID();
+  if (android_build_id.size() > 0) {
+    if (!semicolon_inserted) {
+      android_info_str += ";";
+    }
+    android_info_str += " Build/" + android_build_id;
+  }
+
+  return android_info_str;
+}