Pass implementation object to supplemental classes by reference

Source/modules/filesystem/HTMLInputElementFileSystem.cpp

Index: Source/modules/filesystem/HTMLInputElementFileSystem.cpp
diff --git a/Source/modules/filesystem/HTMLInputElementFileSystem.cpp b/Source/modules/filesystem/HTMLInputElementFileSystem.cpp
index d0ef31ed5d3b83a2a674da9654731e1eb5bc7449..70ec48159308d8194967668b9451f2180773a1fa 100644
--- a/Source/modules/filesystem/HTMLInputElementFileSystem.cpp
+++ b/Source/modules/filesystem/HTMLInputElementFileSystem.cpp
@@ -43,15 +43,15 @@
 namespace WebCore {
 
 // static
-EntryVector HTMLInputElementFileSystem::webkitEntries(ExecutionContext* executionContext, HTMLInputElement* input)
+EntryVector HTMLInputElementFileSystem::webkitEntries(ExecutionContext* executionContext, HTMLInputElement& input)
 {
     EntryVector entries;
-    FileList* files = input->files();
+    FileList* files = input.files();
 
     if (!files)
         return entries;
 
-    RefPtr<DOMFileSystem> filesystem = DOMFileSystem::createIsolatedFileSystem(executionContext, input->droppedFileSystemId());
+    RefPtr<DOMFileSystem> filesystem = DOMFileSystem::createIsolatedFileSystem(executionContext, input.droppedFileSystemId());
     if (!filesystem) {
         // Drag-drop isolated filesystem is not available.
         return entries;