Drop ambiguous MaybeHandle comparison and hashing ops.

src/compiler/js-operator.h

Index: src/compiler/js-operator.h
diff --git a/src/compiler/js-operator.h b/src/compiler/js-operator.h
index 0f4fd3572029a0e44931c3ff128b1c2dbb227c8c..d583f6414e4aa46a91189c811e38ec07c8b4f195 100644
--- a/src/compiler/js-operator.h
+++ b/src/compiler/js-operator.h
@@ -27,16 +27,15 @@ class VectorSlotPair {
 
   bool IsValid() const { return !vector_.is_null(); }
 
-  MaybeHandle<TypeFeedbackVector> vector() const { return vector_; }
+  Handle<TypeFeedbackVector> vector() const { return vector_; }
   FeedbackVectorICSlot slot() const { return slot_; }
 
   int index() const {
-    Handle<TypeFeedbackVector> vector;
-    return vector_.ToHandle(&vector) ? vector->GetIndex(slot_) : -1;
+    return vector_.is_null() ? -1 : vector_->GetIndex(slot_);
   }
 
  private:
-  const MaybeHandle<TypeFeedbackVector> vector_;
+  const Handle<TypeFeedbackVector> vector_;
   const FeedbackVectorICSlot slot_;
 };