Addition of known reliability crash.

Registration of new known crash signature for issue reported via the following reliability test: 

http://build.chromium.org/p/chromium/builders/Win%20Reliability/builds/1431/steps/reliability:%20partial%20result%20of%20current%20build/logs/stdio

BUG=63647
TEST=Reliability


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=70947

[Jeff Timanus, 2011-01-10 21:56:26]

Not much to see.  PTAL.

[vandebo (ex-Chrome), 2011-01-10 21:57:51]

LGTM