Oilpan: add transition types to FileSystem APIs.

Source/modules/filesystem/EntryBase.cpp

Index: Source/modules/filesystem/EntryBase.cpp
diff --git a/Source/modules/filesystem/EntryBase.cpp b/Source/modules/filesystem/EntryBase.cpp
index 5013bd0956b806543458b9b1b849d2517a85afa8..6c4d3a2c148d2c2e4e0c7a65630f0ddc25e7d630 100644
--- a/Source/modules/filesystem/EntryBase.cpp
+++ b/Source/modules/filesystem/EntryBase.cpp
@@ -38,7 +38,7 @@
 
 namespace WebCore {
 
-EntryBase::EntryBase(PassRefPtr<DOMFileSystemBase> fileSystem, const String& fullPath)
+EntryBase::EntryBase(PassRefPtrWillBeRawPtr<DOMFileSystemBase> fileSystem, const String& fullPath)
     : m_fileSystem(fileSystem)
     , m_fullPath(fullPath)
     , m_name(DOMFilePath::getName(fullPath))
@@ -58,4 +58,9 @@ String EntryBase::toURL() const
     return m_fileSystem->createFileSystemURL(this).string();
 }
 
+void EntryBase::trace(Visitor* visitor)
+{
+    visitor->trace(m_fileSystem);
+}
+
 } // namespace WebCore