Clean up JavaScript files to better follow coding standard.

src/messages.js

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 939 matching lines @@
   return eval_origin;
 };
 
 function FormatSourcePosition(frame) {
   var fileName;
   var fileLocation = "";
   if (frame.isNative()) {
     fileLocation = "native";
   } else if (frame.isEval()) {
     fileName = frame.getScriptNameOrSourceURL();
-    if (!fileName)
+    if (!fileName) {
       fileLocation = frame.getEvalOrigin();
+    }
   } else {
     fileName = frame.getFileName();
   }
 
   if (fileName) {
     fileLocation += fileName;
     var lineNumber = frame.getLineNumber();
     if (lineNumber != null) {
       fileLocation += ":" + lineNumber;
       var columnNumber = frame.getColumnNumber();
@@ skipping 218 matching lines @@
     throw e;
   }
 }
 
 
 InstallFunctions($Error.prototype, DONT_ENUM, ['toString', ErrorToString]);
 
 // Boilerplate for exceptions for stack overflows. Used from
 // Isolate::StackOverflow().
 const kStackOverflowBoilerplate = MakeRangeError('stack_overflow', []);