Oilpan: fix build after r180084.

Source/bindings/core/v8/custom/V8HTMLAllCollectionCustom.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 36 matching lines @@
     collection->namedItems(name, namedItems);
 
     if (!namedItems.size())
         return v8Undefined();
 
     if (namedItems.size() == 1)
         return toV8(namedItems.at(0).release(), info.Holder(), info.GetIsolate());
 
     // FIXME: HTML5 specification says this should be a HTMLCollection.
     // http://www.whatwg.org/specs/web-apps/current-work/multipage/common-dom-interfaces.html#htmlallcollection
-    return toV8(StaticElementList::adopt(namedItems), info.Holder(), info.GetIsolate());
+    //
+    // FIXME: Oilpan: explicit conversion needed as there is currently
+    // no implicit RawPtr<T>(RawPtr<U>) constructor (for type
+    // convertible pairs T and U) that would implicitly convert a
+    // RawPtr<StaticElementList> to a RawPtr<NodeList> (the former is
+    // a subclass of the latter.) Such a conversion is needed to
+    // resolve the toV8() call.
+    return toV8(PassRefPtrWillBeRawPtr<NodeList>(StaticElementList::adopt(namedItems)), info.Holder(), info.GetIsolate());
 }
 
 template<class CallbackInfo>
 static v8::Handle<v8::Value> getItem(HTMLAllCollection* collection, v8::Handle<v8::Value> argument, const CallbackInfo& info)
 {
     v8::Local<v8::Uint32> index = argument->ToArrayIndex();
     if (index.IsEmpty()) {
         TOSTRING_DEFAULT(V8StringResource<>, name, argument, v8::Undefined(info.GetIsolate()));
         v8::Handle<v8::Value> result = getNamedItems(collection, name, info);
 
@@ skipping 34 matching lines @@
     if (index.IsEmpty())
         return;
 
     if (Node* node = impl->namedItemWithIndex(name, index->Uint32Value())) {
         v8SetReturnValueFast(info, node, impl);
         return;
     }
 }
 
 } // namespace blink