Oilpan: move WorkerGlobalScope to oilpan's heap.

Source/core/workers/WorkerConsole.cpp

Index: Source/core/workers/WorkerConsole.cpp
diff --git a/Source/core/workers/WorkerConsole.cpp b/Source/core/workers/WorkerConsole.cpp
index f4a819e4dd04997b8cf7c7608073c27057ba571c..5dc81c7465b5213f453665b5560d861dbf4afc32 100644
--- a/Source/core/workers/WorkerConsole.cpp
+++ b/Source/core/workers/WorkerConsole.cpp
@@ -39,6 +39,8 @@
 
 namespace WebCore {
 
+DEFINE_GC_INFO(WorkerConsole)
+
 WorkerConsole::WorkerConsole(WorkerGlobalScope* scope)
     : m_scope(scope)
 {
@@ -62,6 +64,11 @@ ExecutionContext* WorkerConsole::context()
     return m_scope->executionContext();
 }
 
+void WorkerConsole::trace(Visitor* visitor)
+{
+    visitor->trace(m_scope);
+}
+
 // FIXME: add memory getter
 
 } // namespace WebCore