title: Where is the temporary file generated by chrome extension?
body: <p>A chrome extension generated a image file, then opened in a chrome tab, the url of that tab is </p>
  
  <pre><code>filesystem:chrome-extension://fdpohaocaechififmbbbbbknoalclacl/temporary/screencapture-www-google-com-webhp-1436884653249.png
  </code></pre>
  
  <p>Is it possible to locate the temporary file in the OS?</p>
  
  <p>FYI. here is the code that generate the file</p>
  
  <pre><code> window.webkitRequestFileSystem(window.TEMPORARY, size, function(fs){
      fs.root.getFile(name, {create: true}, function(fileEntry) {
          fileEntry.createWriter(function(fileWriter) {
              fileWriter.onwriteend = onwriteend;
              fileWriter.write(blob);
          }, errorHandler);
      }, errorHandler);
  }, errorHandler);
  </code></pre>
  
  <p>The chrome extension is installed on my win7 PC at:</p>
  
  <pre><code>C:\Users\{myName}\AppData\Local\Google\Chrome\User Data\Profile 1\Extensions\fdpohaocaechififmbbbbbknoalclacl\0.0.15_0
  </code></pre>
  
  <p>but cannot find any temporary file/folder. </p>