Comment 11 for bug 691741

Steps to reproduce:
1) Make sure "Use System Title Bar and Borders" is unticked (It is in the right click menu of the tab bar)
2) Maximize Chromium
3) Tick "Use System Title Bar and Borders"
4) Untick "Use System Title Bar and Borders"
5) Restore Chromium

Result:
At step 2 we see two sets of window controls, one drawn by Chromium and one in the top panel.
After step 3 we see two sets of window controls, one in the top panel, one in Chromium's titlebar.
When step 5 is executed we will find again that we have two sets of window controls, but this time one is drawn by Chromium and one by Unity.

Expected result:
At step 2: One set of window controls, the one drawn by Chromium.
At step 3: One set of window controls; in the top panel (Unity).
At step 5: One set of window controls, the one drawn by Chromium.