Re-enable tests 934 & 935

There were two issues causing problems with these tests.

1) The loading of classes could occur prior to the transformer being
   enabled. This was fixed by putting the classes under test into a
   different ClassLoader and disabling app-images.

2) DexToDex compilation was devirtualizing some calls meaning that
   reordering the methods was causing incorrect dispatch.

This reverts commit 50cc0cce.
This reverts commit e9f36b7c.
This reverts commit 1e7e96e4.

Test: ART_TEST_INTERPRETER=true \
      ART_TEST_JIT=true \
      mma -j40 test-art-host

Test: ART_TEST_INTERPRETER_ACCESS_CHECKS=true \
      ART_TEST_RUN_TEST_NO_DEX2OAT=true \
      ART_TEST_RUN_TEST_RELOCATE_NO_PATCHOAT=true \
      ART_TEST_RUN_TEST_NO_RELOCATE=true \
      mma -j40 test-art-host-run-test-934-load-transform \
               test-art-host-run-test-935-non-retransformable

Change-Id: Ia600ba37d45a5f9489b03c7f4d143849c887b8a7