Reland "Add APK targets to build libjingle tests for Android."
patchset #10 id:180001 of https://codereview.webrtc.org/1511633002/

This reverts commit bc14164aad254e72ce4d1e381b912b7d3acf5391.

We have made more preparations downstream, so this should work now. Original CL by perkj@.

BUG=webrtc:2365
The work started from the work by kjellander@ in https://codereview.webrtc.org/1413663003/

Review URL: https://codereview.webrtc.org/1570513004

Cr-Commit-Position: refs/heads/master@{#11186}
diff --git a/webrtc/build/android/test_runner.py b/webrtc/build/android/test_runner.py
index 5b3f3d9..78a7a19 100755
--- a/webrtc/build/android/test_runner.py
+++ b/webrtc/build/android/test_runner.py
@@ -38,6 +38,8 @@
         'webrtc/common_audio/common_audio_unittests.isolate',
     'common_video_unittests':
         'webrtc/common_video/common_video_unittests.isolate',
+    'libjingle_peerconnection_unittest':
+        'talk/libjingle_peerconnection_unittest.isolate',
     'modules_tests': 'webrtc/modules/modules_tests.isolate',
     'modules_unittests': 'webrtc/modules/modules_unittests.isolate',
     'rtc_unittests': 'webrtc/rtc_unittests.isolate',