Use Android Junit Runner for webview ui test

android_webview/tools/automated_ui_tests/BUILD.gn

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/android/rules.gni")
 import("//testing/test.gni")
 
 group("webview_ui_test_app") {
   testonly = true
   deps = [
@@ skipping 28 matching lines @@
 instrumentation_test_apk("webview_ui_test_app_test_apk") {
   apk_name = "WebViewUiTestAppTest"
   android_manifest = "javatests/AndroidManifest.xml"
   java_files = [
     "javatests/src/org/chromium/webview_ui_test/test/LoadDataTest.java",
     "javatests/src/org/chromium/webview_ui_test/test/WebViewTestBase.java",
   ]
   deps = [
     ":webview_ui_test_app_apk_resources",
     ":webview_ui_test_app_java",
+    "//base:base_java",

[mikecase (-- gone --), 2016/09/01 16:26:21]

Doesn't look like you need to add base_java dep in this CL. Can remove this
line.

+    "//third_party/android_support_test_runner:runner_java",
     "//third_party/ub-uiautomator:ub_uiautomator_java",
   ]
   data_deps = [
     ":webview_ui_test_app_apk",
   ]
   apk_under_test = ":webview_ui_test_app_apk"
 }