DevTools: wrong event was used as an indicator of finished write operation.

Source/devtools/front_end/bindings/TempFile.js

 /*
  * Copyright (C) 2013 Google Inc. 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
@@ skipping 63 matching lines @@
      * @this {WebInspector.TempFile}
      */
     function didCreateWriter(writer)
     {
         /**
          * @this {WebInspector.TempFile}
          */
         function didTruncate(e)
         {
             this._writer = writer;
-            writer.onwrite = null;
+            writer.onwriteend = null;
             writer.onerror = null;
             callback(this);
         }
 
         function onTruncateError(e)
         {
             WebInspector.console.error("Failed to truncate temp file " + e.code + " : " + e.message);
             callback(null);
         }
 
         if (writer.length) {
-            writer.onwrite = didTruncate.bind(this);
+            writer.onwriteend = didTruncate.bind(this);
             writer.onerror = onTruncateError;
             writer.truncate(0);
         } else {
             this._writer = writer;
             callback(this);
         }
     }
 
     function errorHandler(e)
     {
@@ skipping 14 matching lines @@
 WebInspector.TempFile.prototype = {
     /**
      * @param {!Array.<string>} strings
      * @param {!function(boolean)} callback
      */
     write: function(strings, callback)
     {
         var blob = new Blob(strings, {type: 'text/plain'});
         this._writer.onerror = function(e)
         {
-            WebInspector.console.error("Failed to write into a temp file: " + e.message);
+            WebInspector.console.error("Failed to write into a temp file: " + e.target.error.message);
             callback(false);
         }
-        this._writer.onwrite = function(e)
+        this._writer.onwriteend = function(e)
         {
             callback(true);
         }
         this._writer.write(blob);
     },
 
     finishWriting: function()
     {
         this._writer = null;
     },
@@ skipping 263 matching lines @@
 
 /**
  * @param {!function()} callback
  */
 WebInspector.TempFile._ensureTempStorageCleared = function(callback)
 {
     if (!WebInspector.TempFile._storageCleaner)
         WebInspector.TempFile._storageCleaner = new WebInspector.TempStorageCleaner();
     WebInspector.TempFile._storageCleaner.ensureStorageCleared(callback);
 }