Update WebRTC Junit tests binaries.

The old binary will be removed in favor of binaries that don't violate
package boundaries.

Bug: webrtc:11289
Change-Id: I338dc11a98dbe3c7c892b056aa9f82069280c02a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2010981Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Mirko Bonadei <mbonadei@chromium.org>
Cr-Commit-Position: refs/heads/master@{#733545}

testing/buildbot/manage.py

@@ -149,7 +149,8 @@ SKIP_GN_ISOLATE_MAP_TARGETS = {
 
   # These tests are only run on WebRTC CI.
   'AppRTCMobileTest',
-  'android_junit_tests',
+  'android_examples_junit_tests',
+  'android_sdk_junit_tests',
   'audio_decoder_unittests',
   'common_audio_unittests',
   'common_video_unittests',