Enables internal filesystem types via Isolated filesystems

webkit/fileapi/isolated_mount_point_provider.cc

Index: webkit/fileapi/isolated_mount_point_provider.cc
diff --git a/webkit/fileapi/isolated_mount_point_provider.cc b/webkit/fileapi/isolated_mount_point_provider.cc
index 35cbcf37e4eecf17250468d64bddaa685911b719..4920b91fd1c03f89fce10df1f0caa42ab19b800b 100644
--- a/webkit/fileapi/isolated_mount_point_provider.cc
+++ b/webkit/fileapi/isolated_mount_point_provider.cc
@@ -44,7 +44,8 @@ FilePath GetPathFromURL(const FileSystemURL& url) {
 }  // namespace
 
 IsolatedMountPointProvider::IsolatedMountPointProvider()
-    : isolated_file_util_(new IsolatedFileUtil()) {
+    : isolated_file_util_(new IsolatedFileUtil()),
+      dragged_file_util_(new DraggedFileUtil()) {
 }
 
 IsolatedMountPointProvider::~IsolatedMountPointProvider() {
@@ -66,7 +67,7 @@ FilePath IsolatedMountPointProvider::GetFileSystemRootPathOnFileThread(
     FileSystemType type,
     const FilePath& virtual_path,
     bool create) {
-  if (create || type != kFileSystemTypeIsolated)
+  if (create)
     return FilePath();
   std::string fsid;
   FilePath path;
@@ -92,8 +93,12 @@ bool IsolatedMountPointProvider::IsRestrictedFileName(
   return false;
 }
 
-FileSystemFileUtil* IsolatedMountPointProvider::GetFileUtil() {
-  return isolated_file_util_.get();
+FileSystemFileUtil* IsolatedMountPointProvider::GetFileUtil(
+    FileSystemType type) {
+  if (type == kFileSystemTypeDragged)
+    return dragged_file_util_.get();
+  else
+    return isolated_file_util_.get();
 }
 
 FilePath IsolatedMountPointProvider::GetPathForPermissionsCheck(