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

test/unittests/compiler/js-type-feedback-unittest.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler.h"
 
 #include "src/compiler/access-builder.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/js-operator.h"
 #include "src/compiler/js-type-feedback.h"
@@ skipping 64 matching lines @@
   }
 
   Node* ReturnLoadNamedFromGlobal(
       const char* string, Node* effect, Node* control,
       JSTypeFeedbackSpecializer::DeoptimizationMode mode) {
     VectorSlotPair feedback;
     Node* global = UndefinedConstant();
     Node* vector = UndefinedConstant();
     Node* context = UndefinedConstant();
 
-    Unique<Name> name = Unique<Name>::CreateUninitialized(
-        isolate()->factory()->InternalizeUtf8String(string));
+    Handle<Name> name = isolate()->factory()->InternalizeUtf8String(string);
     const Operator* op = javascript()->LoadGlobal(name, feedback);
     Node* load = graph()->NewNode(op, context, global, vector, context);
     if (mode == JSTypeFeedbackSpecializer::kDeoptimizationEnabled) {
       for (int i = 0; i < OperatorProperties::GetFrameStateInputCount(op);
            i++) {
         load->AppendInput(zone(), EmptyFrameState());
       }
     }
     load->AppendInput(zone(), effect);
     load->AppendInput(zone(), control);
@@ skipping 89 matching lines @@
 
   EXPECT_THAT(ret, IsReturn(IsNumberConstant(kValue), graph()->start(),
                             graph()->start()));
   EXPECT_THAT(graph()->end(), IsEnd(ret));
 
   EXPECT_FALSE(dependencies()->IsEmpty());
 }
 
 
 TEST_F(JSTypeFeedbackTest, JSLoadNamedGlobalConstString) {
-  Unique<HeapObject> kValue = Unique<HeapObject>::CreateImmovable(
-      isolate()->factory()->undefined_string());
+  Handle<HeapObject> kValue = isolate()->factory()->undefined_string();
   const char* kName = "mango";
-  SetGlobalProperty(kName, kValue.handle());
+  SetGlobalProperty(kName, kValue);
 
   Node* ret = ReturnLoadNamedFromGlobal(
       kName, graph()->start(), graph()->start(),
       JSTypeFeedbackSpecializer::kDeoptimizationDisabled);
   graph()->SetEnd(graph()->NewNode(common()->End(1), ret));
 
   Reduction r = Reduce(ret->InputAt(0),
                        JSTypeFeedbackSpecializer::kDeoptimizationDisabled);
   ASSERT_FALSE(r.Changed());
   EXPECT_TRUE(dependencies()->IsEmpty());
 }
 
 
 TEST_F(JSTypeFeedbackTest, JSLoadNamedGlobalConstStringWithDeoptimization) {
-  Unique<HeapObject> kValue = Unique<HeapObject>::CreateImmovable(
-      isolate()->factory()->undefined_string());
+  Handle<HeapObject> kValue = isolate()->factory()->undefined_string();
   const char* kName = "mango";
-  SetGlobalProperty(kName, kValue.handle());
+  SetGlobalProperty(kName, kValue);
 
   Node* ret = ReturnLoadNamedFromGlobal(
       kName, graph()->start(), graph()->start(),
       JSTypeFeedbackSpecializer::kDeoptimizationEnabled);
   graph()->SetEnd(graph()->NewNode(common()->End(1), ret));
 
   Reduction r = Reduce(ret->InputAt(0),
                        JSTypeFeedbackSpecializer::kDeoptimizationEnabled);
 
   // Check LoadNamed(global) => HeapConstant[kValue]
@@ skipping 42 matching lines @@
   // Check LoadNamed(global) => LoadField[PropertyCell::value](cell)
   ASSERT_TRUE(r.Changed());
   FieldAccess access = AccessBuilder::ForPropertyCellValue();
   Capture<Node*> cell_capture;
   Matcher<Node*> load_field_match = IsLoadField(
       access, CaptureEq(&cell_capture), graph()->start(), graph()->start());
   EXPECT_THAT(r.replacement(), load_field_match);
 
   HeapObjectMatcher cell(cell_capture.value());
   EXPECT_TRUE(cell.HasValue());
-  EXPECT_TRUE(cell.Value().handle()->IsPropertyCell());
+  EXPECT_TRUE(cell.Value()->IsPropertyCell());
 
   EXPECT_THAT(ret,
               IsReturn(load_field_match, load_field_match, graph()->start()));
   EXPECT_THAT(graph()->end(), IsEnd(ret));
 
   EXPECT_FALSE(dependencies()->IsEmpty());
   dependencies()->Rollback();
 }
 
 
@@ skipping 31 matching lines @@
   // Check LoadNamed(global) => LoadField[PropertyCell::value](cell)
   ASSERT_TRUE(r.Changed());
   FieldAccess access = AccessBuilder::ForPropertyCellValue();
   Capture<Node*> cell_capture;
   Matcher<Node*> load_field_match = IsLoadField(
       access, CaptureEq(&cell_capture), graph()->start(), graph()->start());
   EXPECT_THAT(r.replacement(), load_field_match);
 
   HeapObjectMatcher cell(cell_capture.value());
   EXPECT_TRUE(cell.HasValue());
-  EXPECT_TRUE(cell.Value().handle()->IsPropertyCell());
+  EXPECT_TRUE(cell.Value()->IsPropertyCell());
 
   EXPECT_THAT(ret,
               IsReturn(load_field_match, load_field_match, graph()->start()));
   EXPECT_THAT(graph()->end(), IsEnd(ret));
 
   EXPECT_FALSE(dependencies()->IsEmpty());
   dependencies()->Rollback();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8