Comment #12 on issue 5638 by [email protected]: Closing a tab should  
do fast shutdown (terminate) when possible
http://code.google.com/p/chromium/issues/detail?id=5638

The following revision refers to this bug:
     http://src.chromium.org/viewvc/chrome?view=rev&revision=27831

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r27831 | [email protected] | 2009-10-01 21:53:59 -0700 (Thu, 01 Oct 2009)  
| 14 lines
Changed paths:
    M  
http://src.chromium.org/viewvc/chrome/trunk/src/chrome/chrome.gyp?r1=27831&r2=27830
    M  
http://src.chromium.org/viewvc/chrome/trunk/src/chrome/renderer/renderer_webkitclient_impl.cc?r1=27831&r2=27830
    M  
http://src.chromium.org/viewvc/chrome/trunk/src/chrome/renderer/renderer_webkitclient_impl.h?r1=27831&r2=27830

Make sudden termination into a counter.

We were incorrectly interpreting enableSuddenTermination to mean "enable  
sudden termination". Really it should just decrement a counter, and we  
should only enable sudden termination when that counter reaches 0.

Related to, but not the fix for, http://crbug.com/5638

This may have been causing memory corruption due to shutting down the  
renderer process while writing to a storage area or icon database (although  
honestly I don't actually know if we even use those parts of webkit).

Also, add a ui test that fails before this patch and succeeds with this  
patch.

BUG=none
TEST=sudden termination still works on a simple page

Review URL: http://codereview.chromium.org/245036
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