Enable stub generation using Hydrogen/Lithium (again)

src/arm/codegen-arm.h

Index: src/arm/codegen-arm.h
diff --git a/src/arm/codegen-arm.h b/src/arm/codegen-arm.h
index 7ca2c8d4d42d00a7e542dcba766f76158935d4dd..ec5f83d182ab03bcf52e268537775e92520f2249 100644
--- a/src/arm/codegen-arm.h
+++ b/src/arm/codegen-arm.h
@@ -47,6 +47,10 @@ enum TypeofState { INSIDE_TYPEOF, NOT_INSIDE_TYPEOF };
 
 class CodeGenerator: public AstVisitor {
  public:
+  CodeGenerator() {
+    InitializeAstVisitor();
+  }
+
   static bool MakeCode(CompilationInfo* info);
 
   // Printing of AST, etc. as requested by flags.
@@ -71,6 +75,8 @@ class CodeGenerator: public AstVisitor {
                               int pos,
                               bool right_here = false);
 
+  DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
+
  private:
   DISALLOW_COPY_AND_ASSIGN(CodeGenerator);
 };
@@ -95,10 +101,10 @@ class StringCharLoadGenerator : public AllStatic {
 class MathExpGenerator : public AllStatic {
  public:
   static void EmitMathExp(MacroAssembler* masm,
-                          DoubleRegister input,
-                          DoubleRegister result,
-                          DoubleRegister double_scratch1,
-                          DoubleRegister double_scratch2,
+                          DwVfpRegister input,
+                          DwVfpRegister result,
+                          DwVfpRegister double_scratch1,
+                          DwVfpRegister double_scratch2,
                           Register temp1,
                           Register temp2,
                           Register temp3);