[turbofan] Make RawMachineAssembler handle the end node.

src/compiler/code-stub-assembler.h

Index: src/compiler/code-stub-assembler.h
diff --git a/src/compiler/code-stub-assembler.h b/src/compiler/code-stub-assembler.h
index b238d8be9833798a73d60cf240008a6eb5218787..3c4ae05eaa5c99898d97b36b312262368a501c69 100644
--- a/src/compiler/code-stub-assembler.h
+++ b/src/compiler/code-stub-assembler.h
@@ -10,7 +10,6 @@
 #include "src/allocation.h"
 #include "src/builtins.h"
 #include "src/runtime/runtime.h"
-#include "src/zone-containers.h"
 
 namespace v8 {
 namespace internal {
@@ -71,24 +70,18 @@ class CodeStubAssembler {
 
  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_;