Enable Oilpan by default in modules/filesystem/

Source/modules/filesystem/DataTransferItemFileSystem.cpp

Index: Source/modules/filesystem/DataTransferItemFileSystem.cpp
diff --git a/Source/modules/filesystem/DataTransferItemFileSystem.cpp b/Source/modules/filesystem/DataTransferItemFileSystem.cpp
index ab61d0365b3c8719c94252150d1cd01851f2ee26..4aadb40dabbcb2d33065ae010566a064ac01564e 100644
--- a/Source/modules/filesystem/DataTransferItemFileSystem.cpp
+++ b/Source/modules/filesystem/DataTransferItemFileSystem.cpp
@@ -48,22 +48,22 @@
 namespace WebCore {
 
 // static
-PassRefPtrWillBeRawPtr<Entry> DataTransferItemFileSystem::webkitGetAsEntry(ExecutionContext* executionContext, DataTransferItem& item)
+Entry* DataTransferItemFileSystem::webkitGetAsEntry(ExecutionContext* executionContext, DataTransferItem& item)
 {
     if (!item.dataObjectItem()->isFilename())
-        return nullptr;
+        return 0;
 
     // For dragged files getAsFile must be pretty lightweight.
     Blob* file = item.getAsFile().get();
     // The clipboard may not be in a readable state.
     if (!file)
-        return nullptr;
+        return 0;
     ASSERT(file->isFile());
 
     DOMFileSystem* domFileSystem = DraggedIsolatedFileSystem::getDOMFileSystem(item.clipboard()->dataObject().get(), executionContext);
     if (!domFileSystem) {
         // IsolatedFileSystem may not be enabled.
-        return nullptr;
+        return 0;
     }
 
     // The dropped entries are mapped as top-level entries in the isolated filesystem.
@@ -72,7 +72,7 @@ PassRefPtrWillBeRawPtr<Entry> DataTransferItemFileSystem::webkitGetAsEntry(Execu
     // FIXME: This involves synchronous file operation. Consider passing file type data when we dispatch drag event.
     FileMetadata metadata;
     if (!getFileMetadata(toFile(file)->path(), metadata))
-        return nullptr;
+        return 0;
 
     if (metadata.type == FileMetadata::TypeDirectory)
         return DirectoryEntry::create(domFileSystem, virtualPath);