Oilpan: have DOMException be on the heap by default.

Source/modules/geofencing/GeofencingError.h

Index: Source/modules/geofencing/GeofencingError.h
diff --git a/Source/modules/geofencing/GeofencingError.h b/Source/modules/geofencing/GeofencingError.h
index 643c43c121034c18835ecfd45fc159d83d2101b4..8fc5b5e25a8d247a1363b5437231aa834c6e635b 100644
--- a/Source/modules/geofencing/GeofencingError.h
+++ b/Source/modules/geofencing/GeofencingError.h
@@ -5,12 +5,12 @@
 #ifndef GeofencingError_h
 #define GeofencingError_h
 
-#include "core/dom/DOMException.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/WebGeofencingError.h"
 
 namespace blink {
 
+class DOMException;
 class ScriptPromiseResolver;
 
 class GeofencingError {
@@ -18,7 +18,7 @@ class GeofencingError {
 public:
     // For CallbackPromiseAdapter.
     typedef blink::WebGeofencingError WebType;
-    static PassRefPtrWillBeRawPtr<DOMException> take(ScriptPromiseResolver*, WebType* webErrorRaw);
+    static DOMException* take(ScriptPromiseResolver*, WebType* webErrorRaw);
     static void dispose(WebType* webErrorRaw);
 
 private: