Google Chrome v39 introduces a new Avatar menu, which is now permanently displayed at the top-right corner of each window.
The only way to get rid of it is through the "experimental" flags. Type the following in the address bar to reveal the flag:
chrome://flags/#enable-new-avatar-menu
Set it to Disabled to turn it off, then restart Chrome entirely to apply the changes.
Note that this also works under Mac and linux.
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