Enable Oilpan by default in modules/filesystem/

Source/web/WebDOMFileSystem.cpp

Index: Source/web/WebDOMFileSystem.cpp
diff --git a/Source/web/WebDOMFileSystem.cpp b/Source/web/WebDOMFileSystem.cpp
index 739121a812d42708bfcae2f96d5b7f5c883fba20..11c6d9140ce77e2144c47311ffcfc4bca0e2796a 100644
--- a/Source/web/WebDOMFileSystem.cpp
+++ b/Source/web/WebDOMFileSystem.cpp
@@ -72,7 +72,7 @@ WebDOMFileSystem WebDOMFileSystem::create(
     SerializableType serializableType)
 {
     ASSERT(frame && toWebLocalFrameImpl(frame)->frame());
-    RefPtrWillBeRawPtr<DOMFileSystem> domFileSystem = DOMFileSystem::create(toWebLocalFrameImpl(frame)->frame()->document(), name, static_cast<WebCore::FileSystemType>(type), rootURL);
+    DOMFileSystem* domFileSystem = DOMFileSystem::create(toWebLocalFrameImpl(frame)->frame()->document(), name, static_cast<WebCore::FileSystemType>(type), rootURL);
     if (serializableType == SerializableTypeSerializable)
         domFileSystem->makeClonable();
     return WebDOMFileSystem(domFileSystem);
@@ -157,14 +157,15 @@ v8::Handle<v8::Value> WebDOMFileSystem::createV8Entry(
     return toV8(FileEntry::create(m_private.get(), path), creationContext, isolate);
 }
 
-WebDOMFileSystem::WebDOMFileSystem(const PassRefPtrWillBeRawPtr<DOMFileSystem>& domFileSystem)
+WebDOMFileSystem::WebDOMFileSystem(DOMFileSystem* domFileSystem)
     : m_private(domFileSystem)
 {
 }
 
-WebDOMFileSystem& WebDOMFileSystem::operator=(const PassRefPtrWillBeRawPtr<WebCore::DOMFileSystem>& domFileSystem)
+WebDOMFileSystem& WebDOMFileSystem::operator=(const WebCore::DOMFileSystem*& domFileSystem)
 {
-    m_private = domFileSystem;
+    // FIXME: Oilpan: WebPrivatePtr<> should be able to handle 'const' pointer assignments.
+    m_private = const_cast<WebCore::DOMFileSystem*>(domFileSystem);
     return *this;
 }