[turbofan] Remove usage of Unique<T> from graph.

src/compiler/node-matchers.h

Index: src/compiler/node-matchers.h
diff --git a/src/compiler/node-matchers.h b/src/compiler/node-matchers.h
index d543425fca48606a0947291dc13bda6ecaa1c9cd..26d11449188128c78895d1494f8a50b2bb94c419 100644
--- a/src/compiler/node-matchers.h
+++ b/src/compiler/node-matchers.h
@@ -153,9 +153,9 @@ typedef FloatMatcher<double, IrOpcode::kNumberConstant> NumberMatcher;
 
 // A pattern matcher for heap object constants.
 struct HeapObjectMatcher final
-    : public ValueMatcher<Unique<HeapObject>, IrOpcode::kHeapConstant> {
+    : public ValueMatcher<Handle<HeapObject>, IrOpcode::kHeapConstant> {
   explicit HeapObjectMatcher(Node* node)
-      : ValueMatcher<Unique<HeapObject>, IrOpcode::kHeapConstant>(node) {}
+      : ValueMatcher<Handle<HeapObject>, IrOpcode::kHeapConstant>(node) {}
 };