[Android] Generate scripts at build time to run android tests.

content/shell/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/config.gni")
 import("//build/config/android/rules.gni")
 import("//build/module_args/v8.gni")
 import("//third_party/icu/config.gni")
 
 generate_jni("content_shell_jni_headers") {
@@ skipping 128 matching lines @@
     ":content_shell_apk_java",
     "//base:base_java",
     "//base:base_java_test_support",
     "//content/public/test/android:content_java_test_support",
     "//content/shell/android:content_shell_java",
     "//content/public/android:content_java",
   ]
   DEPRECATED_java_in_dir = "javatests/src"
 }
 
-android_apk("content_shell_test_apk") {
-  testonly = true
+instrumentation_test_apk("content_shell_test_apk") {
   deps = [
     "//content/public/android:content_javatests",
     "//base:base_javatests",
     "//net/android:net_javatests",
-    "//testing/android/broker:broker_java",
   ]
   datadeps = [
     ":content_shell_apk",
-    "//testing/android/driver:driver_apk",
   ]
   apk_under_test = ":content_shell_apk"
   apk_name = "ContentShellTest"
   android_manifest = "javatests/AndroidManifest.xml"
+  isolate_file = "../../content_shell_test_apk.isolate"
 }
 
 if (current_cpu != "x64" && current_cpu != "arm64") {
   chromium_linker_test_manifest =
       "$target_gen_dir/linker_test_apk/AndroidManifest.xml"
 
   jinja_template("chromium_linker_test_manifest") {
     testonly = true
     input = "linker_test_apk/AndroidManifest.xml.jinja2"
     output = chromium_linker_test_manifest
@@ skipping 45 matching lines @@
 
   # GYP: //content/content_tests.gypi:chromium_android_linker_test_jni_headers
   generate_jni("linker_test_jni_headers") {
     testonly = true
     jni_package = "content/shell"
     sources = [
       "linker_test_apk/src/org/chromium/chromium_linker_test_apk/LinkerTests.java",
     ]
   }
 }