ARM native string addition.

src/ia32/codegen-ia32.h

Index: src/ia32/codegen-ia32.h
diff --git a/src/ia32/codegen-ia32.h b/src/ia32/codegen-ia32.h
index 296afb9bf19ec26d2da4e546b1cb876ca256571d..843bbf76f750560e40697024679dce0ce64522e1 100644
--- a/src/ia32/codegen-ia32.h
+++ b/src/ia32/codegen-ia32.h
@@ -745,13 +745,6 @@ class GenericBinaryOpStub: public CodeStub {
 };
 
 
-// Flag that indicates how to generate code for the stub StringAddStub.
-enum StringAddFlags {
-  NO_STRING_ADD_FLAGS = 0,
-  NO_STRING_CHECK_IN_STUB = 1 << 0  // Omit string check in stub.
-};
-
-
 class StringStubBase: public CodeStub {
  public:
   // Generate code for copying characters using a simple loop. This should only
@@ -777,6 +770,13 @@ class StringStubBase: public CodeStub {
 };
 
 
+// Flag that indicates how to generate code for the stub StringAddStub.
+enum StringAddFlags {
+  NO_STRING_ADD_FLAGS = 0,
+  NO_STRING_CHECK_IN_STUB = 1 << 0  // Omit string check in stub.
+};
+
+
 class StringAddStub: public StringStubBase {
  public:
   explicit StringAddStub(StringAddFlags flags) {