Add initial code to do filename munging in the FileSystem....

webkit/fileapi/sandboxed_file_system_operation.cc

Index: webkit/fileapi/sandboxed_file_system_operation.cc
===================================================================
--- webkit/fileapi/sandboxed_file_system_operation.cc	(revision 72915)
+++ webkit/fileapi/sandboxed_file_system_operation.cc	(working copy)
@@ -150,6 +150,10 @@
   FileSystemOperation::TouchFile(path, last_access_time, last_modified_time);
 }
 
+base::FileUtilProxyBase* SandboxedFileSystemOperation::file_util_proxy() const {
+  return file_system_context_->file_util_proxy();
+}
+
 void SandboxedFileSystemOperation::DidGetRootPath(
     bool success, const FilePath& path, const std::string& name) {
   DCHECK(success || path.empty());
@@ -162,7 +166,7 @@
   // We may want do more checks, but for now it just checks if the given
   // |path| is under the valid FileSystem root path for this host context.
   if (!file_system_context_->path_manager()->CrackFileSystemPath(
-          path, NULL, NULL, NULL)) {
+          path, NULL, NULL, NULL, NULL)) {
     dispatcher()->DidFail(base::PLATFORM_FILE_ERROR_SECURITY);
     return false;
   }
@@ -174,7 +178,7 @@
   GURL origin_url;
   FilePath virtual_path;
   if (!file_system_context_->path_manager()->CrackFileSystemPath(
-          path, &origin_url, NULL, &virtual_path)) {
+          path, &origin_url, NULL, NULL, &virtual_path)) {
     dispatcher()->DidFail(base::PLATFORM_FILE_ERROR_SECURITY);
     return false;
   }