Move the test template to //testing/test.gni (part 2)

build/secondary/third_party/cacheinvalidation/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("//testing/test.gni")
+
 config("cacheinvalidation_config") {
   include_dirs = [
     "overrides",
     "src",
   ]
 }
 
 static_library("cacheinvalidation") {
   sources = [
     "overrides/google/cacheinvalidation/deps/callback.h",
@@ skipping 120 matching lines @@
   android_library("cacheinvalidation_javalib") {
     deps = [
       ":cacheinvalidation_proto_java",
       "//third_party/android_protobuf:protobuf_nano_javalib",
       "//third_party/android_tools:android_gcm_java",
     ]
 
     DEPRECATED_java_in_dir = "src/java"
   }
 }