[Android] Switch instrumentation tests to generated device isolates.

android_webview/test/BUILD.gn

 # Copyright 2015 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")
 
 # Mark all targets as test only.
 testonly = true
 
@@ skipping 187 matching lines @@
     "../javatests/src/org/chromium/android_webview/test/util/CommonResources.java",
     "../javatests/src/org/chromium/android_webview/test/util/CookieUtils.java",
     "../javatests/src/org/chromium/android_webview/test/util/GraphicsTestUtils.java",
     "../javatests/src/org/chromium/android_webview/test/util/ImagePageGenerator.java",
     "../javatests/src/org/chromium/android_webview/test/util/JSUtils.java",
     "../javatests/src/org/chromium/android_webview/test/util/JavascriptEventObserver.java",
     "../javatests/src/org/chromium/android_webview/test/util/VideoSurfaceViewUtils.java",
     "../javatests/src/org/chromium/android_webview/test/util/VideoTestUtil.java",
     "../javatests/src/org/chromium/android_webview/test/util/VideoTestWebServer.java",
   ]
-  isolate_file = "../android_webview_test_data.isolate"
+  data = [
+    "data/",
+  ]
   additional_apks = [ "//net/android:net_test_support_apk" ]
 }
 
 # GYP: //android_webview/android_webview_tests.gypi:android_webview_unittests
 test("android_webview_unittests") {
   # Tests do not require any data, but our dependencies pull a lot in.
   ignore_all_data_deps = true
 
   deps = [
     ":android_webview_unittests_assets",
@@ skipping 60 matching lines @@
   ]
 }
 
 # GYP: //android_webview/android_webview_tests.gypi:libdrawgl
 shared_library("libdrawgl") {
   sources = [
     "shell/src/draw_gl/draw_gl.cc",
   ]
   configs -= [ "//build/config/android:hide_native_jni_exports" ]
 }