Remove property loads from js builtins objects from runtime.

src/messages.js

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // -------------------------------------------------------------------
 
 var $errorToString;
-var $getStackTraceLine;
 var $internalErrorSymbol;
-var $messageGetPositionInLine;
-var $messageGetLineNumber;
-var $messageGetSourceLine;
-var $stackOverflowBoilerplate;
 var $stackTraceSymbol;
 var MakeError;
 var MakeEvalError;
 var MakeRangeError;
 var MakeReferenceError;
 var MakeSyntaxError;
 var MakeTypeError;
 var MakeURIError;
 
 (function(global, utils) {
@@ skipping 182 matching lines @@
 function GetLineNumber(message) {
   var start_position = %MessageGetStartPosition(message);
   if (start_position == -1) return kNoLineNumberInfo;
   var script = %MessageGetScript(message);
   var location = script.locationFromPosition(start_position, true);
   if (location == null) return kNoLineNumberInfo;
   return location.line + 1;
 }
 
 
+//Returns the offset of the given position within the containing line.
+function GetColumnNumber(message) {
+  var script = %MessageGetScript(message);
+  var start_position = %MessageGetStartPosition(message);
+  var location = script.locationFromPosition(start_position, true);
+  if (location == null) return -1;
+  return location.column;
+}
+
+
 // Returns the source code line containing the given source
 // position, or the empty string if the position is invalid.
 function GetSourceLine(message) {
   var script = %MessageGetScript(message);
   var start_position = %MessageGetStartPosition(message);
   var location = script.locationFromPosition(start_position, true);
   if (location == null) return "";
   return location.sourceText();
 }
 
+
 /**
  * Find a line number given a specific source position.
  * @param {number} position The source position.
  * @return {number} 0 if input too small, -1 if input too large,
        else the line number.
  */
 function ScriptLineFromPosition(position) {
   var lower = 0;
   var upper = this.lineCount() - 1;
   var line_ends = this.line_ends;
@@ skipping 313 matching lines @@
                         this.to_position,
                         StringSubstring);
 }
 
 utils.SetUpLockedPrototype(SourceSlice,
   ["script", "from_line", "to_line", "from_position", "to_position"],
   ["sourceText", SourceSliceSourceText]
 );
 
 
-// Returns the offset of the given position within the containing
-// line.
-function GetPositionInLine(message) {
-  var script = %MessageGetScript(message);
-  var start_position = %MessageGetStartPosition(message);
-  var location = script.locationFromPosition(start_position, true);
-  if (location == null) return -1;
-  return location.column;
-}
-
-
 function GetStackTraceLine(recv, fun, pos, isGlobal) {
   return new CallSite(recv, fun, pos, false).toString();
 }
 
 // ----------------------------------------------------------------------------
 // Error implementation
 
 var CallSiteReceiverKey = NEW_PRIVATE("CallSite#receiver");
 var CallSiteFunctionKey = NEW_PRIVATE("CallSite#function");
 var CallSitePositionKey = NEW_PRIVATE("CallSite#position");
@@ skipping 418 matching lines @@
     throw MakeTypeError(kCalledOnNonObject, "Error.prototype.toString");
   }
 
   return %ErrorToStringRT(this);
 }
 
 utils.InstallFunctions(GlobalError.prototype, DONT_ENUM,
                        ['toString', ErrorToString]);
 
 $errorToString = ErrorToString;
-$messageGetPositionInLine = GetPositionInLine;
-$messageGetLineNumber = GetLineNumber;
-$messageGetSourceLine = GetSourceLine;
 
 MakeError = function(type, arg0, arg1, arg2) {
   return MakeGenericError(GlobalError, type, arg0, arg1, arg2);
 }
 
 MakeRangeError = function(type, arg0, arg1, arg2) {
   return MakeGenericError(GlobalRangeError, type, arg0, arg1, arg2);
 }
 
 MakeSyntaxError = function(type, arg0, arg1, arg2) {
   return MakeGenericError(GlobalSyntaxError, type, arg0, arg1, arg2);
 }
 
 MakeTypeError = function(type, arg0, arg1, arg2) {
   return MakeGenericError(GlobalTypeError, type, arg0, arg1, arg2);
 }
 
 MakeURIError = function() {
   return MakeGenericError(GlobalURIError, kURIMalformed);
 }
 
 // Boilerplate for exceptions for stack overflows. Used from
 // Isolate::StackOverflow().
-$stackOverflowBoilerplate = MakeRangeError(kStackOverflow);
-%DefineAccessorPropertyUnchecked($stackOverflowBoilerplate, 'stack',
+var StackOverflowBoilerplate = MakeRangeError(kStackOverflow);
+%DefineAccessorPropertyUnchecked(StackOverflowBoilerplate, 'stack',
                                  StackTraceGetter, StackTraceSetter,
                                  DONT_ENUM);
 
 // Define actual captureStackTrace function after everything has been set up.
 captureStackTrace = function captureStackTrace(obj, cons_opt) {
   // Define accessors first, as this may fail and throw.
   ObjectDefineProperty(obj, 'stack', { get: StackTraceGetter,
                                        set: StackTraceSetter,
                                        configurable: true });
   %CollectStackTrace(obj, cons_opt ? cons_opt : captureStackTrace);
 };
 
 GlobalError.captureStackTrace = captureStackTrace;
 
 utils.ExportToRuntime(function(to) {
   to.Error = GlobalError;
   to.EvalError = GlobalEvalError;
   to.RangeError = GlobalRangeError;
   to.ReferenceError = GlobalReferenceError;
   to.SyntaxError = GlobalSyntaxError;
   to.TypeError = GlobalTypeError;
   to.URIError = GlobalURIError;
   to.GetStackTraceLine = GetStackTraceLine;
   to.NoSideEffectToString = NoSideEffectToString;
   to.ToDetailString = ToDetailString;
   to.MakeError = MakeGenericError;
+  to.MessageGetLineNumber = GetLineNumber;
+  to.MessageGetColumnNumber = GetColumnNumber;
+  to.MessageGetSourceLine = GetSourceLine;
+  to.StackOverflowBoilerplate = StackOverflowBoilerplate;
 });
 
 });