Style guide dictates a camel case scheme for classes. Since the tests
are actually classes, update their names to reflect that.

Change-Id: Ib7422b6d8c5de8414765439704fc103eae8b2d63
Reviewed-on: https://chromium-review.googlesource.com/208680Tested-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>