TikZ does not function

[GoogleCodeExporter]

What steps will reproduce the problem?
1.Create a document with the following code: 
\documentclass[a4paper,12pt]{article}
\usepackage{tikz}
\begin{document}

\begin{figure}
  \centering
  \begin{tikzpicture}
    %Black box
    \draw[fill=black] (0,0) -- (3,-1.5) -- (3,-1.25) -- (2.2,-0.85) -- 
(2.2,0.65) -- (1,1.25) -- (1,-0.25) -- (0,0.25) -- cycle;
  \end{tikzpicture}
\end{figure}

\end{document}​

2. Compile.
3. Export to pdf

What is the expected output? What do you see instead?
I expect to see a small black box, but instead I see nothing.

What version of the product are you using? On what browser?
Browser: Google Chrome 5.0.375.29 beta
I'm using the version current at 21:30 GMT+1 11/5-2010.

Please provide any additional information below.

Original issue reported on code.google.com by EricJens...@gmail.com on 11 May 2010 at 7:35

[GoogleCodeExporter]

I experience the same problem.  Tikz uses pgf, and I believe it requires use of 
the PDFLaTeX compiler.  I have been unable to figure out if it's possible to do 
this in latex-lab.

Original comment by arkfran...@gmail.com on 24 Jun 2010 at 10:46