Change Exception class references to use Class.getName().

This CL updates references to fully qualified Exception names (such as
"java.lang.RuntimeException") to get the Exception name through the
Exception's Class Object (e.g. RuntimeException.class.getName()).

Bug: 163433613
Test: atest FrameworksVcntests
Change-Id: I1ceccedda0a513a8c41caaef752d9f0005eceac0