This currently has no effect and can create an artificial lag in e.g.,
realtime.

Change-Id: Ia1c7c6dbe7c6fe82a944f087f1b0d1dbbc0aa1b6

Adds a test that ensures the application is able to trigger frame size
changes via vpx_codec_enc_config_set()

Change-Id: I231c062e533d75c8d63c5f8a5544650117429a63

Implements a couple simple tests of the encoder API using the gtest
framework:

  TestDisableKeyframes
  TestForceKeyframe
  TestKeyframeMaxDistance

Change-Id: I38e93fe242fbeb30bb11b23ac12de8ddc291a28d

Consolodate the unit tests under vp8/ to the test/ directory

Change-Id: I6d6a0fb60f5e3874a4d6710e9e121dd3e81a93db

Rework unit tests  to have a single executable rather than many, which
should avoid pollution of the visual studio project namespace, improve
build times, and make it easier to use the gtest test sharding system
when we get these going on the continuous build cluster.

Change-Id: If4c3e5d4b3515522869de6c89455c2a64697cca6