Convert app banners to use Mojo.

content/shell/renderer/layout_test/layout_test_content_renderer_client.cc

Index: content/shell/renderer/layout_test/layout_test_content_renderer_client.cc
diff --git a/content/shell/renderer/layout_test/layout_test_content_renderer_client.cc b/content/shell/renderer/layout_test/layout_test_content_renderer_client.cc
index 11e0338cf6b5f2b4683d307e223274d074e65955..8571abdfa4a8bec908525a149e5c2a6fbcd58c80 100644
--- a/content/shell/renderer/layout_test/layout_test_content_renderer_client.cc
+++ b/content/shell/renderer/layout_test/layout_test_content_renderer_client.cc
@@ -32,7 +32,6 @@
 #include "gin/modules/module_registry.h"
 #include "ppapi/shared_impl/ppapi_switches.h"
 #include "third_party/WebKit/public/platform/WebMediaStreamCenter.h"
-#include "third_party/WebKit/public/platform/modules/app_banner/WebAppBannerClient.h"
 #include "third_party/WebKit/public/web/WebFrameWidget.h"
 #include "third_party/WebKit/public/web/WebKit.h"
 #include "third_party/WebKit/public/web/WebPluginParams.h"
@@ -214,14 +213,6 @@ WebThemeEngine* LayoutTestContentRendererClient::OverrideThemeEngine() {
       ->ThemeEngine();
 }
 
-std::unique_ptr<blink::WebAppBannerClient>
-LayoutTestContentRendererClient::CreateAppBannerClient(
-    RenderFrame* render_frame) {
-  test_runner::WebTestInterfaces* interfaces =
-      LayoutTestRenderThreadObserver::GetInstance()->test_interfaces();
-  return interfaces->CreateAppBannerClient();
-}
-
 std::unique_ptr<MediaStreamRendererFactory>
 LayoutTestContentRendererClient::CreateMediaStreamRendererFactory() {
 #if defined(ENABLE_WEBRTC)