Add support for running the profiler output processing scripts with node.

tools/profile_view.js

 // Copyright 2009 the V8 project authors. All rights reserved.
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 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
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 //
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+// Node imports
+if (typeof module !== 'undefined' && module.exports) {
+  ConsArray = require('./consarray');
+}
 
 /**
  * Creates a Profile View builder object.
  *
  * @param {number} samplingRate Number of ms between profiler ticks.
  * @constructor
  */
 function ViewBuilder(samplingRate) {
   this.samplingRate = samplingRate;
 };
@@ skipping 154 matching lines @@
  * Sorts all the node's children recursively.
  *
  * @param {function(ProfileView.Node,
  *     ProfileView.Node):number} sortFunc A sorting
  *     functions. Must comply with Array.sort sorting function requirements.
  */
 ProfileView.Node.prototype.sortChildren = function(
     sortFunc) {
   this.children.sort(sortFunc);
 };
+
+// Node exports
+if (typeof module !== 'undefined' && module.exports) {
+  module.exports.ProfileView = ProfileView;
+  module.exports.ViewBuilder = ViewBuilder;
+}