Add ChromeShellTestApk and other chrome/ test stuff

chrome/test/android/BUILD.gn

+# Copyright 2014 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")
+
+
+# GYP: //chrome/chrome_tests.gypi:chrome_java_test_support
+android_library("chrome_java_test_support") {
+  testonly = true
+  DEPRECATED_java_in_dir = "javatests/src"
+  deps = [
+    "//base:base_java",
+    "//base:base_java_test_support",
+    "//chrome/android:chrome_java",
+    "//chrome/android:chrome_java_resources",
+    "//components/invalidation:java",
+    "//content/public/android:content_java",
+    "//content/public/test/android:content_java_test_support",
+    "//sync/android:sync_java",
+    "//sync:sync_java_test_support",
+  ]
+}