Oilpan: have Console be on the heap by default.

Source/core/frame/ConsoleBase.h

Index: Source/core/frame/ConsoleBase.h
diff --git a/Source/core/frame/ConsoleBase.h b/Source/core/frame/ConsoleBase.h
index cb99132470ad194f2822c40903fe2805316f851d..18dcfbe6f59dd7500ce95ee579f29b69296b70bd 100644
--- a/Source/core/frame/ConsoleBase.h
+++ b/Source/core/frame/ConsoleBase.h
@@ -38,15 +38,13 @@
 #include "core/frame/DOMWindowProperty.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
 
 namespace blink {
 
 class ConsoleMessage;
 class ScriptArguments;
 
-class ConsoleBase : public RefCountedWillBeGarbageCollectedFinalized<ConsoleBase>, public ScriptWrappable {
+class ConsoleBase : public GarbageCollectedFinalized<ConsoleBase>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
     void debug(ScriptState*, PassRefPtrWillBeRawPtr<ScriptArguments>);