Turn test runner library into an actual component

content/shell/renderer/layout_test/blink_test_runner.cc

 // Copyright (c) 2012 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.
 
 #include "content/shell/renderer/layout_test/blink_test_runner.h"
 
 #include <algorithm>
 #include <clocale>
 #include <cmath>
 
@@ skipping 663 matching lines @@
   main_frame->willShowInstallBannerPrompt(request_id, blink_event_platforms,
                                           &reply);
 
   callback.Run(reply == blink::WebAppBannerPromptReply::Cancel);
 }
 
 void BlinkTestRunner::ResolveBeforeInstallPromptPromise(
       int request_id, const std::string& platform) {
   test_runner::WebTestInterfaces* interfaces =
       LayoutTestRenderProcessObserver::GetInstance()->test_interfaces();
-  interfaces->GetTestInterfaces()->GetAppBannerClient()->ResolvePromise(
-      request_id, platform);
+  interfaces->GetAppBannerClient()->ResolvePromise(request_id, platform);
 }
 
 blink::WebPlugin* BlinkTestRunner::CreatePluginPlaceholder(
     blink::WebLocalFrame* frame, const blink::WebPluginParams& params) {
   if (params.mimeType == "application/x-plugin-placeholder-test")
     return (new TestPluginPlaceholder(frame, params))->plugin();
   return 0;
 }
 
 // RenderViewObserver  --------------------------------------------------------
@@ skipping 191 matching lines @@
 
   leak_detector_->TryLeakDetection(main_frame);
 }
 
 void BlinkTestRunner::ReportLeakDetectionResult(
     const LeakDetectionResult& report) {
   Send(new ShellViewHostMsg_LeakDetectionDone(routing_id(), report));
 }
 
 }  // namespace content