Making the AIDL GN target support multiple include directories.

android_webview/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("//android_webview/system_webview_apk_tmpl.gni")
 import("//android_webview/webview_repack_locales.gni")
 import("//build/config/android/config.gni")
 import("//build/config/android/rules.gni")
 import("//build/config/locales.gni")
 import("//components/spellcheck/spellcheck_build_features.gni")
@@ skipping 773 matching lines @@
     ":android_webview_commandline_java",
     ":android_webview_platform_services_java",
     "//base:base_java",
     "//components/minidump_uploader:minidump_uploader_java",
   ]
 
   srcjar_deps = [ ":crash_receiver_aidl" ]
 }
 
 android_aidl("crash_receiver_aidl") {
-  import_include = "java/src"
+  import_include = [ "java/src" ]
   sources = [
     "java/src/org/chromium/android_webview/crash/ICrashReceiverService.aidl",
   ]
 }
 
 if (!use_webview_internal_framework) {
   system_webview_apk_tmpl("system_webview_apk") {
     android_manifest = system_webview_android_manifest
     android_manifest_dep = ":system_webview_manifest"
     deps = [
       ":system_webview_resources",
       "//android_webview/glue",
     ]
     apk_name = "SystemWebView"
   }
 }