Add database recovery for FileSystemDirectoryDatabase.

webkit/fileapi/sandbox_mount_point_provider.cc

Index: webkit/fileapi/sandbox_mount_point_provider.cc
diff --git a/webkit/fileapi/sandbox_mount_point_provider.cc b/webkit/fileapi/sandbox_mount_point_provider.cc
index 138629c9defe72395d8c4822365369c41a684416..777b5ba9ebc89ac413173b1a68f1f6754acfe102 100644
--- a/webkit/fileapi/sandbox_mount_point_provider.cc
+++ b/webkit/fileapi/sandbox_mount_point_provider.cc
@@ -522,7 +522,7 @@ int64 SandboxMountPointProvider::GetOriginUsageOnFileThread(
       GetBaseDirectoryForOriginAndType(origin_url, type, false);
   if (base_path.empty() || !file_util::DirectoryExists(base_path)) return 0;
   FilePath usage_file_path =
-      base_path.AppendASCII(FileSystemUsageCache::kUsageFileName);
+      base_path.Append(FileSystemUsageCache::kUsageFileName);
 
   bool is_valid = FileSystemUsageCache::IsValid(usage_file_path);
   int32 dirty_status = FileSystemUsageCache::GetDirty(usage_file_path);
@@ -621,7 +621,7 @@ FilePath SandboxMountPointProvider::GetUsageCachePathForOriginAndType(
       GetBaseDirectoryForOriginAndType(origin_url, type, false);
   if (base_path.empty())
     return FilePath();
-  return base_path.AppendASCII(FileSystemUsageCache::kUsageFileName);
+  return base_path.Append(FileSystemUsageCache::kUsageFileName);
 }
 
 FilePath SandboxMountPointProvider::OldCreateFileSystemRootPath(