Merge 33269 - Revert 33255 Report active extensions in crash reports. This o...

Merge 33269 - Revert 33255  Report active extensions in crash reports. This only implements Windows right now. Mac and linux will be separate CLs.

"Active" is overloaded to mean different things depending on
the process type:

 browser: all enabled extensions
 renderer: unique set of extensions from all user scripts
 extension: extensions running in the process

BUG=27169
Review URL: http://codereview.chromium.org/437078



There are thousands of new crashes with reivison 33256 and 33255, so i'm
reverting. the crashes are in chrome_2610000!child_process_logging::SetActiveURL



TBR=aa@chromium.org
Review URL: http://codereview.chromium.org/448006

TBR=nsylvain@chromium.org

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=33274