Increase test timeout by 2 more seconds.

The previous increase made almost all interactive_ui_tests pass
in Debug, but
  DevToolsSanityTest.TestShowScriptsTab
  DevToolsSanityTest.TestScriptsTabIsPopulatedOnInspectedPageRefresh
are still failing. They used to take 23.3s and 24s with gcc, and
the DevToolsSanityTests got about 5s slower in Debug on 10.5 (less
on 10.6).

BUG=91371
TEST=none
TBR=phajdan.jr

Review URL: http://codereview.chromium.org/7583029

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@95771 0039d316-1c4b-4281-b951-d872f2087c98

base/test/test_timeouts.cc

@@ -44,7 +44,7 @@ bool TestTimeouts::initialized_ = false;
 // static
 int TestTimeouts::tiny_timeout_ms_ = 100;
 int TestTimeouts::action_timeout_ms_ = 2000;
-int TestTimeouts::action_max_timeout_ms_ = 29000;
+int TestTimeouts::action_max_timeout_ms_ = 31000;
 int TestTimeouts::large_test_timeout_ms_ = 3 * 60 * 1000;
 int TestTimeouts::huge_test_timeout_ms_ = 10 * 60 * 1000;