[turbofan] Make RawMachineAssembler handle the end node.

src/compiler/code-stub-assembler.h

 // 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.
 
 #ifndef V8_COMPILER_CODE_STUB_ASSEMBLER_H_
 #define V8_COMPILER_CODE_STUB_ASSEMBLER_H_
 
 // Clients of this interface shouldn't depend on lots of compiler internals.
 // Do not include anything from src/compiler here!
 #include "src/allocation.h"
 #include "src/builtins.h"
 #include "src/runtime/runtime.h"
-#include "src/zone-containers.h"
 
 namespace v8 {
 namespace internal {
 
 class CallInterfaceDescriptor;
 class Isolate;
 class Zone;
 
 namespace compiler {
 
@@ skipping 40 matching lines @@
   Node* CallRuntime(Runtime::FunctionId function_id, Node* context, Node* arg1,
                     Node* arg2);
 
   Node* TailCallRuntime(Runtime::FunctionId function_id, Node* context,
                         Node* arg1);
   Node* TailCallRuntime(Runtime::FunctionId function_id, Node* context,
                         Node* arg1, Node* arg2);
 
  private:
   friend class CodeStubAssemblerTester;
-  // Close the graph.
-  void End();
 
   Node* CallN(CallDescriptor* descriptor, Node* code_target, Node** args);
   Node* TailCallN(CallDescriptor* descriptor, Node* code_target, Node** args);
 
   Node* SmiShiftBitsConstant();
 
-  // Adds an end node of the graph.
-  void AddEndInput(Node* input);
-
   // Private helpers which delegate to RawMachineAssembler.
   Graph* graph();
   Isolate* isolate();
   Zone* zone();
 
   base::SmartPointer<RawMachineAssembler> raw_assembler_;
-  ZoneVector<Node*> end_nodes_;
   Code::Kind kind_;
   const char* name_;
   bool code_generated_;
 
   DISALLOW_COPY_AND_ASSIGN(CodeStubAssembler);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_CODE_STUB_ASSEMBLER_H_