Remove unused functions under components/test_runner

components/test_runner/web_test_interfaces.cc

 // Copyright 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.
 
 #include "components/test_runner/web_test_interfaces.h"
 
 #include <utility>
 
 #include "components/test_runner/app_banner_client.h"
 #include "components/test_runner/event_sender.h"
@@ skipping 77 matching lines @@
   return new MockWebAudioDevice(sample_rate);
 }
 
 scoped_ptr<blink::WebAppBannerClient>
 WebTestInterfaces::CreateAppBannerClient() {
   scoped_ptr<AppBannerClient> client(new AppBannerClient);
   interfaces_->SetAppBannerClient(client.get());
   return std::move(client);
 }
 
-AppBannerClient* WebTestInterfaces::GetAppBannerClient() {
-  return interfaces_->GetAppBannerClient();
-}
-
 scoped_ptr<WebFrameTestClient> WebTestInterfaces::CreateWebFrameTestClient() {
   return make_scoped_ptr(new WebFrameTestClient(
         interfaces_->GetTestRunner(),
         interfaces_->GetDelegate(),
         interfaces_->GetAccessibilityController(),
         interfaces_->GetEventSender()));
 }
 
 scoped_ptr<WebViewTestClient> WebTestInterfaces::CreateWebViewTestClient(
     WebTestProxyBase* web_test_proxy_base) {
   return make_scoped_ptr(new WebViewTestClient(
         interfaces_->GetTestRunner(), interfaces_->GetDelegate(),
         interfaces_->GetEventSender(), web_test_proxy_base));
 }
 
 }  // namespace test_runner