Replace usages of DEPRECATED_java_in_dir with java_files

chrome/test/chromedriver/test/webview_shell/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")
 
 android_resources("chromedriver_webview_shell_resources") {
   resource_dirs = [ "java/res" ]
   android_manifest = "java/AndroidManifest.xml"
 }
 android_apk("chromedriver_webview_shell_apk") {
   apk_name = "ChromeDriverWebViewShell"
   deps = [
     ":chromedriver_webview_shell_resources",
   ]
-  DEPRECATED_java_in_dir = "java/src"
+  java_files = [ "java/src/org/chromium/chromedriver_webview_shell/Main.java" ]
   android_manifest = "java/AndroidManifest.xml"
 }