Add new crashes. I've spent a while investigating these and can't figure out

what might have caused them.

BUG=21520
TEST=green
Review URL: http://codereview.chromium.org/202048

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@25909 0039d316-1c4b-4281-b951-d872f2087c98

chrome/test/data/reliability/known_crashes.txt

@@ -116,3 +116,10 @@ PREFIX : messageloop::dowork
 
 # 21295
 PREFIX : renderwidgethost::getbackingstore
+
+# bug 25120 from [25866:25873]
+PREFIX: renderviewhost::setnavigationssuspended___renderviewhostmanager::shouldclosetabonunresponsiverenderer___tabcontents::rendererunresponsive
+
+# bug 25120 from [25874:25879]
+PREFIX: renderviewhost::executejavascriptinwebframe___domui::calljavascriptfunction___downloadsdomhandler::sendcurrentdownloads
+PREFIX: deletetask<urlfetcher>::run