title: Setting the value of 'dataURL' exceeded the quota
body: <p>I have a JavaScript code which save string to the Local storage, the string size is 400000,</p>
  
  <pre><code>var dataURL = canvas.toDataURL("image/jpg").toString();
  localStorage.setItem("dataURL", dataURL);
  </code></pre>
  
  <p>I open the html file from chrome, in one computer its OK in the other computer i get </p>
  
  <blockquote>
    <p>Uncaught QuotaExceededError: Failed to execute 'setItem' on
    'Storage': Setting the value of 'dataURL' exceeded the quota.</p>
  </blockquote>
  
  <p>In this computer I allowed to save string length no more than 100000 chars.
  Both computers have the same chrome's Version 35.0.1916.114 m 
  Why?</p>