Support setting brekpoint by script name set in //@ scriptURL= comment,

src/messages.js

Index: src/messages.js
diff --git a/src/messages.js b/src/messages.js
index 7ef6c7369ee11104d1b90363f2b15b7112c819dc..de6a362c337996e4510e9f921881514faffd4717 100644
--- a/src/messages.js
+++ b/src/messages.js
@@ -433,6 +433,30 @@ Script.prototype.lineCount = function() {
 
 
 /**
+ * Returns the name of script if available, contents of sourceURL comment
+ * otherwise. See 
+ * http://fbug.googlecode.com/svn/branches/firebug1.1/docs/ReleaseNotes_1.1.txt
+ * for details on using //@ sourceURL comment to identify scritps that don't
+ * have name.
+ * 
+ * @return {?string} script name if present, value for //@ sourceURL comment
+ * otherwise.
+ */
+Script.prototype.nameOrSourceURL = function() {
+  if (this.name)
+    return this.name;
+  // TODO(608): the spaces in a regexp below had to be escaped as \040 
+  // because this file is being processed by js2c whose handling of spaces
+  // in regexps is broken. Also, ['"] are excluded from allowed URLs to
+  // avoid matches against sources that invoke evals with sourceURL.
+  var sourceUrlPattern =
+    /\/\/@[\040\t]sourceURL=[\040\t]*([^\s'"]*)[\040\t]*$/m;
+  var match = sourceUrlPattern.exec(this.source);
+  return match ? match[1] : this.name;
+}
+
+
+/**
  * Class for source location. A source location is a position within some
  * source with the following properties:
  *   script   : script object for the source