Convert app banners to use Mojo.

content/shell/renderer/layout_test/blink_test_runner.h

Index: content/shell/renderer/layout_test/blink_test_runner.h
diff --git a/content/shell/renderer/layout_test/blink_test_runner.h b/content/shell/renderer/layout_test/blink_test_runner.h
index ef20e509a589e89897aefe22cbc7ee01d00bbb02..8b3d6af0fed99d32913a4b8ef2ed04f7352f5d90 100644
--- a/content/shell/renderer/layout_test/blink_test_runner.h
+++ b/content/shell/renderer/layout_test/blink_test_runner.h
@@ -36,6 +36,7 @@ struct WebRect;
 }
 
 namespace test_runner {
+class AppBannerService;
 class WebViewTestProxyBase;
 }
 
@@ -149,6 +150,9 @@ class BlinkTestRunner : public RenderViewObserver,
       int request_id,
       const std::vector<std::string>& event_platforms,
       const base::Callback<void(bool)>& callback) override;
+  void ResolveBeforeInstallPromptPromise(
+      int request_id,
+      const std::string& platform) override;
   blink::WebPlugin* CreatePluginPlaceholder(
     blink::WebLocalFrame* frame,
     const blink::WebPluginParams& params) override;
@@ -212,6 +216,8 @@ class BlinkTestRunner : public RenderViewObserver,
 
   bool focus_on_next_commit_;
 
+  std::unique_ptr<test_runner::AppBannerService> app_banner_service_;
+
   std::unique_ptr<LeakDetector> leak_detector_;
 
   DISALLOW_COPY_AND_ASSIGN(BlinkTestRunner);