Convert Web Store Inline Install IPCs to mojo

chrome/renderer/extensions/webstore_bindings_helper.h

+// Copyright (c) 2017 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 CHROME_RENDERER_EXTENSIONS_WEBSTORE_BINDINGS_HELPER_H_
+#define CHROME_RENDERER_EXTENSIONS_WEBSTORE_BINDINGS_HELPER_H_
+
+#include "chrome/common/extensions/mojo/inline_install.mojom.h"
+#include "extensions/renderer/object_backed_native_handler.h"
+#include "mojo/public/cpp/bindings/binding.h"
+
+namespace extensions {
+
+class WebstoreBindingsHelper : public ObjectBackedNativeHandler,

[Devlin, 2017/04/12 01:16:07]

I think for this, this class can just be an inner class of WebstoreBindings
rather than in its own file.  Then, each instance of WebstoreBindings can own a
WebstoreBindingsHelper.

[catmullings, 2017/04/14 20:59:40]

Done.

+                               public mojom::InlineInstallStatus {
+ public:
+  static void Create(ScriptContext* context,
+                     mojom::InlineInstallStatusRequest request);
+
+ private:
+  WebstoreBindingsHelper(ScriptContext* context,
+                         mojom::InlineInstallStatusRequest request);
+  ~WebstoreBindingsHelper() override;
+
+  void InlineInstallStageChanged(api::webstore::InstallStage stage) override;
+  void InlineInstallDownloadProgress(int percent_downloaded) override;
+
+  mojo::Binding<mojom::InlineInstallStatus> binding_;
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_RENDERER_EXTENSIONS_WEBSTORE_BINDINGS_HELPER_H_