Oilpan: fix build after r194661.

Source/core/inspector/PromiseTracker.h

Index: Source/core/inspector/PromiseTracker.h
diff --git a/Source/core/inspector/PromiseTracker.h b/Source/core/inspector/PromiseTracker.h
index db1dd97191e51ea9f2c50c98b37fc83d002e10cb..d3f0b96aa4876cf7a0ca3b2f61be6f500a5f7fab 100644
--- a/Source/core/inspector/PromiseTracker.h
+++ b/Source/core/inspector/PromiseTracker.h
@@ -20,9 +20,8 @@ namespace blink {
 class ScriptState;
 class ScriptValue;
 
-class PromiseTracker final : public NoBaseWillBeGarbageCollected<PromiseTracker> {
+class PromiseTracker final : public NoBaseWillBeGarbageCollectedFinalized<PromiseTracker> {
     WTF_MAKE_NONCOPYABLE(PromiseTracker);
-    DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(PromiseTracker);
 public:
     class Listener : public WillBeGarbageCollectedMixin {
     public:
@@ -35,6 +34,8 @@ public:
         return adoptPtrWillBeNoop(new PromiseTracker(listener, isolate));
     }
 
+    ~PromiseTracker();
+
     bool isEnabled() const { return m_isEnabled; }
     void setEnabled(bool enabled, bool captureStacks);
     void clear();