Add FilePath support to FileVersionInfo, fix Mac memory issues.

base/file_version_info.cc

Index: base/file_version_info.cc
===================================================================
--- base/file_version_info.cc	(revision 7212)
+++ base/file_version_info.cc	(working copy)
@@ -40,9 +40,9 @@
 
 // static
 FileVersionInfo* FileVersionInfo::CreateFileVersionInfo(
-    const std::wstring& file_path) {
+    const FilePath& file_path) {
   DWORD dummy;
-  const wchar_t* path = file_path.c_str();
+  const wchar_t* path = file_path.value().c_str();
   DWORD length = ::GetFileVersionInfoSize(path, &dummy);
   if (length == 0)
     return NULL;
@@ -71,6 +71,12 @@
   }
 }
 
+FileVersionInfo* FileVersionInfo::CreateFileVersionInfo(
+    const std::wstring& file_path) {
+  FilePath file_path_fp = FilePath::FromWStringHack(file_path);
+  return CreateFileVersionInfo(file_path_fp);
+}
+
 std::wstring FileVersionInfo::company_name() {
   return GetStringValue(L"CompanyName");
 }