Refactor inlined functions to avoid using subgraphs.

src/hydrogen.h

Index: src/hydrogen.h
diff --git a/src/hydrogen.h b/src/hydrogen.h
index d8b1cfb6e3346be06da013551c0ee038a1f2be84..510ba70dd7108900c304a76b0544db330f304fd7 100644
--- a/src/hydrogen.h
+++ b/src/hydrogen.h
@@ -792,11 +792,7 @@ class HGraphBuilder: public AstVisitor {
 
   HBasicBlock* CreateBasicBlock(HEnvironment* env);
   HSubgraph* CreateEmptySubgraph();
-  HSubgraph* CreateBranchSubgraph(HEnvironment* env);
   HBasicBlock* CreateLoopHeaderBlock();
-  HSubgraph* CreateInlinedSubgraph(HEnvironment* outer,
-                                   Handle<JSFunction> target,
-                                   FunctionLiteral* function);
 
   // Helpers for flow graph construction.
   void LookupGlobalPropertyCell(Variable* var,
@@ -900,12 +896,6 @@ class HGraphBuilder: public AstVisitor {
                                 bool smi_and_map_check);
 
 
-  HBasicBlock* BuildTypeSwitch(HValue* receiver,
-                               ZoneMapList* maps,
-                               ZoneList<HSubgraph*>* body_graphs,
-                               HSubgraph* default_graph,
-                               int join_id);
-
   // The translation state of the currently-being-translated function.
   FunctionState* function_state_;