Refine systemInfo.cpu API defintions and provide systemInfo.cpu.get impl for Windows and Linux

base/win/windows_version.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 "base/win/windows_version.h"
 
 #include <windows.h>
 
 #include "base/logging.h"
+#include "base/utf_string_conversions.h"
+#include "base/win/registry.h"
 
 namespace base {
 namespace win {
 
 // static
 OSInfo* OSInfo::GetInstance() {
   // Note: we don't use the Singleton class because it depends on AtExitManager,
   // and it's convenient for other modules to use this classs without it. This
   // pattern is copied from gurl.cc.
   static OSInfo* info;
@@ skipping 49 matching lines @@
     case PROCESSOR_ARCHITECTURE_AMD64: architecture_ = X64_ARCHITECTURE; break;
     case PROCESSOR_ARCHITECTURE_IA64:  architecture_ = IA64_ARCHITECTURE; break;
   }
   processors_ = system_info.dwNumberOfProcessors;
   allocation_granularity_ = system_info.dwAllocationGranularity;
 }
 
 OSInfo::~OSInfo() {
 }
 
+std::string OSInfo::processor_model_name() {
+  if (processor_model_name_.empty()) {
+    const wchar_t kProcessorNameString[] =
+        L"HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0";
+    base::win::RegKey key(HKEY_LOCAL_MACHINE, kProcessorNameString, KEY_READ);
+    string16 value;
+    key.ReadValue(L"ProcessorNameString", &value);
+    processor_model_name_ = UTF16ToUTF8(value);
+  }
+  return processor_model_name_;
+}
+
 // static
 OSInfo::WOW64Status OSInfo::GetWOW64StatusForProcess(HANDLE process_handle) {
   typedef BOOL (WINAPI* IsWow64ProcessFunc)(HANDLE, PBOOL);
   IsWow64ProcessFunc is_wow64_process = reinterpret_cast<IsWow64ProcessFunc>(
       GetProcAddress(GetModuleHandle(L"kernel32.dll"), "IsWow64Process"));
   if (!is_wow64_process)
     return WOW64_DISABLED;
   BOOL is_wow64 = FALSE;
   if (!(*is_wow64_process)(process_handle, &is_wow64))
     return WOW64_UNKNOWN;
   return is_wow64 ? WOW64_ENABLED : WOW64_DISABLED;
 }
 
 Version GetVersion() {
   return OSInfo::GetInstance()->version();
 }
 
 }  // namespace win
 }  // namespace base