Oilpan: have Navigator and its supplements be on the heap by default.

Source/modules/gamepad/NavigatorGamepad.cpp

Index: Source/modules/gamepad/NavigatorGamepad.cpp
diff --git a/Source/modules/gamepad/NavigatorGamepad.cpp b/Source/modules/gamepad/NavigatorGamepad.cpp
index 534dbfe21feade4436f81cc93ef9bc2f7591805b..f6673f8978ec4774810f5c0bcf4ecc3fa52876d8 100644
--- a/Source/modules/gamepad/NavigatorGamepad.cpp
+++ b/Source/modules/gamepad/NavigatorGamepad.cpp
@@ -80,10 +80,10 @@ NavigatorGamepad* NavigatorGamepad::from(Document& document)
 
 NavigatorGamepad& NavigatorGamepad::from(Navigator& navigator)
 {
-    NavigatorGamepad* supplement = static_cast<NavigatorGamepad*>(WillBeHeapSupplement<Navigator>::from(navigator, supplementName()));
+    NavigatorGamepad* supplement = static_cast<NavigatorGamepad*>(HeapSupplement<Navigator>::from(navigator, supplementName()));
     if (!supplement) {
         supplement = new NavigatorGamepad(navigator.frame());
-        provideTo(navigator, supplementName(), adoptPtrWillBeNoop(supplement));
+        provideTo(navigator, supplementName(), supplement);
     }
     return *supplement;
 }
@@ -106,7 +106,7 @@ DEFINE_TRACE(NavigatorGamepad)
 {
     visitor->trace(m_gamepads);
     visitor->trace(m_pendingEvents);
-    WillBeHeapSupplement<Navigator>::trace(visitor);
+    HeapSupplement<Navigator>::trace(visitor);
     DOMWindowProperty::trace(visitor);
     PlatformEventController::trace(visitor);
     DOMWindowLifecycleObserver::trace(visitor);