Convert SysInfo::AmountOfFreeDiskSpace from wstring to FilePath.

base/sys_info_win.cc

 // Copyright (c) 2008 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/sys_info.h"
 
 #include <windows.h>
 
+#include "base/file_path.h"
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
 #include "base/string_util.h"
 
 namespace base {
 
 // static
 int SysInfo::NumberOfProcessors() {
   SYSTEM_INFO info;
   GetSystemInfo(&info);
   return static_cast<int>(info.dwNumberOfProcessors);
 }
 
 // static
 int64 SysInfo::AmountOfPhysicalMemory() {
   MEMORYSTATUSEX memory_info;
   memory_info.dwLength = sizeof(memory_info);
   if (!GlobalMemoryStatusEx(&memory_info)) {
     NOTREACHED();
     return 0;
   }
 
   int64 rv = static_cast<int64>(memory_info.ullTotalPhys);
   if (rv < 0)
     rv = kint64max;
   return rv;
 }
 
 // static
-int64 SysInfo::AmountOfFreeDiskSpace(const std::wstring& path) {
+int64 SysInfo::AmountOfFreeDiskSpace(const FilePath& path) {
   ULARGE_INTEGER available, total, free;
-  if (!GetDiskFreeSpaceExW(path.c_str(), &available, &total, &free)) {
+  if (!GetDiskFreeSpaceExW(path.value().c_str(), &available, &total, &free)) {
     return -1;
   }
   int64 rv = static_cast<int64>(available.QuadPart);
   if (rv < 0)
     rv = kint64max;
   return rv;
 }
 
 // static
 bool SysInfo::HasEnvVar(const wchar_t* var) {
@@ skipping 63 matching lines @@
                                             int32 *bugfix_version) {
   OSVERSIONINFO info = {0};
   info.dwOSVersionInfoSize = sizeof(info);
   GetVersionEx(&info);
   *major_version = info.dwMajorVersion;
   *minor_version = info.dwMinorVersion;
   *bugfix_version = 0;
 }
 
 }  // namespace base