[Android] Switch instrumentation tests to generated device isolates.

android_webview/test/BUILD.gn

Index: android_webview/test/BUILD.gn
diff --git a/android_webview/test/BUILD.gn b/android_webview/test/BUILD.gn
index 5a660f837bb3e0c4ce9ab27874f2c7ae4ecaa646..bf88fd5a90696d6026ea415e7b647853382fc33b 100644
--- a/android_webview/test/BUILD.gn
+++ b/android_webview/test/BUILD.gn
@@ -205,7 +205,9 @@ instrumentation_test_apk("android_webview_test_apk") {
     "../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" ]
 }