Making the AIDL GN target support multiple include directories.

base/test/BUILD.gn

 # Copyright (c) 2013 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/ui.gni")
 import("//build/config/nacl/config.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
@@ skipping 349 matching lines @@
       "android/java/src/org/chromium/base/MultiprocessTestClientService0.java",
       "android/java/src/org/chromium/base/MultiprocessTestClientService1.java",
       "android/java/src/org/chromium/base/MultiprocessTestClientService2.java",
       "android/java/src/org/chromium/base/MultiprocessTestClientService3.java",
       "android/java/src/org/chromium/base/MultiprocessTestClientService4.java",
     ]
   }
 
   android_aidl("test_support_java_aidl") {
     testonly = true
-    import_include = "android/java/src"
+    import_include = [ "android/java/src" ]
     sources = [
       "android/java/src/org/chromium/base/ITestClient.aidl",
     ]
   }
 }