Second half of fix for b/64985590. Updated test to use 
AnimationTestActivity which is opaque, because the default configuration 
of an app on Wear was to be transparent due to swipe to dismiss which 
caused the test to fail when using TestActivity that takes on the 
default transparency.

Test: Ran ActivityManagerAssistantStackTests.

Bug: 64985590
Change-Id: Ia5f94c6e995637cc5e1cb3baf08d6740a1c95d94
1 file changed