Convert app banners to use Mojo.

components/test_runner/app_banner_service.h

+// Copyright 2016 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.
+
+#ifndef COMPONENTS_TEST_RUNNER_APP_BANNER_SERVICE_H_
+#define COMPONENTS_TEST_RUNNER_APP_BANNER_SERVICE_H_
+
+#include "base/macros.h"
+#include "components/test_runner/test_runner_export.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "third_party/WebKit/public/platform/modules/app_banner/app_banner.mojom.h"
+
+namespace test_runner {
+
+// Test app banner service that is registered as a Mojo service for
+// BeforeInstallPromptEvents to look up when the test runner is executed.
+class TEST_RUNNER_EXPORT AppBannerService
+    : public NON_EXPORTED_BASE(blink::mojom::AppBannerService) {
+ public:
+  AppBannerService(int request_id);
+  ~AppBannerService() override;
+
+  void BindHandle(mojo::ScopedMessagePipeHandle handle);
+  void ResolvePromise(int request_id, const std::string& platform);
+
+  // blink::mojom::AppBannerService overrides.
+  void DisplayAppBanner(int request_id) override;
+  void SetEvent(blink::mojom::AppBannerEventPtr event) override;
+
+ private:
+  int request_id_;
+
+  std::unique_ptr<mojo::Binding<blink::mojom::AppBannerService>> binding_;
+
+  // A pointer to the current beforeinstallprompt event (if it exists).
+  std::unique_ptr<blink::mojom::AppBannerEventPtr> event_;
+
+  DISALLOW_COPY_AND_ASSIGN(AppBannerService);
+};
+
+}  // namespace test_runner
+
+#endif  // COMPONENTS_TEST_RUNNER_APP_BANNER_SERVICE_H_