Custom call IC-s for String.prototype.{charAt,charCodeAt}.

src/arm/stub-cache-arm.cc

Index: src/arm/stub-cache-arm.cc
diff --git a/src/arm/stub-cache-arm.cc b/src/arm/stub-cache-arm.cc
index 8001cd842a944d1c99acae742c4932a75c7ec28a..aebe2b88b0750e1904f2034dd9b3c0a6edf2f00d 100644
--- a/src/arm/stub-cache-arm.cc
+++ b/src/arm/stub-cache-arm.cc
@@ -1174,6 +1174,26 @@ Object* CallStubCompiler::CompileArrayPopCall(Object* object,
 }
 
 
+Object* CallStubCompiler::CompileStringCharCodeAtCall(Object* object,
+                                                      JSObject* holder,
+                                                      JSFunction* function,
+                                                      String* name,
+                                                      CheckType check) {
+  // TODO(<bug>): implement this.
+  return Heap::undefined_value();
+}
+
+
+Object* CallStubCompiler::CompileStringCharAtCall(Object* object,
+                                                  JSObject* holder,
+                                                  JSFunction* function,
+                                                  String* name,
+                                                  CheckType check) {
+  // TODO(<bug>): implement this.
+  return Heap::undefined_value();
+}
+
+
 Object* CallStubCompiler::CompileCallConstant(Object* object,
                                               JSObject* holder,
                                               JSFunction* function,