[test] Remove DirectGraphBuilder helper.

test/cctest/compiler/graph-builder-tester.h

 // Copyright 2014 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.
 
 #ifndef V8_CCTEST_COMPILER_GRAPH_BUILDER_TESTER_H_
 #define V8_CCTEST_COMPILER_GRAPH_BUILDER_TESTER_H_
 
 #include "src/v8.h"
 #include "test/cctest/cctest.h"
 
 #include "src/compiler/common-operator.h"
 #include "src/compiler/graph-builder.h"
 #include "src/compiler/machine-operator.h"
 #include "src/compiler/simplified-operator.h"
 #include "test/cctest/compiler/call-tester.h"
 #include "test/cctest/compiler/simplified-graph-builder.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
-// A class that just passes node creation on to the Graph.
-class DirectGraphBuilder : public GraphBuilder {
- public:
-  DirectGraphBuilder(Isolate* isolate, Graph* graph)
-      : GraphBuilder(isolate, graph) {}
-  virtual ~DirectGraphBuilder() {}
-
- protected:
-  virtual Node* MakeNode(const Operator* op, int value_input_count,
-                         Node** value_inputs, bool incomplete) final {
-    return graph()->NewNode(op, value_input_count, value_inputs, incomplete);
-  }
-};
-
-
 class MachineCallHelper : public CallHelper {
  public:
   MachineCallHelper(Isolate* isolate, MachineSignature* machine_sig);
 
   Node* Parameter(size_t index);
 
   void GenerateCode() { Generate(); }
 
  protected:
   virtual byte* Generate();
@@ skipping 54 matching lines @@
   }
   virtual ~GraphBuilderTester() {}
 
   Factory* factory() const { return isolate()->factory(); }
 };
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CCTEST_COMPILER_GRAPH_BUILDER_TESTER_H_