Add support for Android spellcheck menu in Chrome/WebViews

content/browser/android/text_suggestion_host_impl.h

+// Copyright 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 TEXT_SUGGESTION_HOST_IMPL_H_
+#define TEXT_SUGGESTION_HOST_IMPL_H_
+
+#include "third_party/WebKit/public/platform/input_host.mojom.h"
+
+namespace service_manager {
+struct BindSourceInfo;
+}
+
+namespace content {
+
+class ImeAdapterAndroid;
+
+class TextSuggestionHostImpl : public blink::mojom::TextSuggestionHost {

[yosin_UTC9, 2017/06/07 01:34:15]

Could you add class level comment?
Is this |final| class?

+ public:
+  explicit TextSuggestionHostImpl(ImeAdapterAndroid*);
+
+  static void Create(ImeAdapterAndroid*,
+                     const service_manager::BindSourceInfo& source_info,
+                     blink::mojom::TextSuggestionHostRequest request);
+
+  void StartSpellCheckMenuTimer();
+
+  void ShowSpellCheckSuggestionMenu(
+      double caret_x,
+      double caret_y,
+      const std::string& marked_text,
+      std::vector<blink::mojom::SpellCheckSuggestionPtr> suggestions) override;
+
+ private:
+  ImeAdapterAndroid* ime_adapter_android_;

[yosin_UTC9, 2017/06/07 01:34:15]

nit: s/ImeAdapterAndroid*/ImeAdapterAndroid* const/

+};

[yosin_UTC9, 2017/06/07 01:34:15]

Please add DISALLOW_COPY_AND_ASSIGN(...)

+
+}  // namespace content
+
+#endif  // TEXT_SUGGESTION_HOST_IMPL_H_