Avoid instrumenting methods in c.g.g.lang.Exceptions.

Calls to methods in c.g.g.lang.Exceptions are inserted by the
compiler to handle exceptions, hence neither their bodies nor
their calls should be instrumented.

Change-Id: Ie0beb6a0c259af780eae90d6de80105cc44935ea
Fixes failing tests missed in the Java8 patch.

Change-Id: I13fc11fbe0958f5d2ca114bd36625f6aa2e8a648