Add support for Android spellcheck menu in Chrome/WebViews

third_party/WebKit/Source/core/editing/suggestion/TextSuggestionController.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 TextSuggestionController_h
+#define TextSuggestionController_h
+
+#include "core/CoreExport.h"
+#include "core/dom/DocumentShutdownObserver.h"
+#include "platform/heap/Handle.h"
+#include "public/platform/input_host.mojom-blink.h"
+
+namespace blink {
+
+class Document;
+class LocalFrame;
+
+// This class handles functionality related to displaying a menu of text
+// suggestions (e.g. from spellcheck), and performing actions relating to those
+// suggestions. Android is currently the only platform that has such a menu.
+class CORE_EXPORT TextSuggestionController final
+    : public GarbageCollectedFinalized<TextSuggestionController>,
+      public DocumentShutdownObserver {
+  USING_GARBAGE_COLLECTED_MIXIN(TextSuggestionController);
+
+ public:
+  explicit TextSuggestionController(LocalFrame&);
+
+  void DocumentAttached(Document*);
+
+  bool IsMenuOpen() const;
+
+  void HandlePotentialMisspelledWordTap();
+
+  void ApplySpellCheckSuggestion(const WTF::String& suggestion);
+  void DeleteActiveSuggestionRange();
+  void NewWordAddedToDictionary(const WTF::String& word);
+  void SpellCheckMenuTimeoutCallback();
+  void SuggestionMenuClosed();
+
+  DECLARE_TRACE();
+
+ private:
+  Document& GetDocument() const;
+  bool IsAvailable() const;
+
+  LocalFrame& GetFrame() const {

[yosin_UTC9, 2017/06/20 01:46:37]

Could you move this to .cpp file for ease of debugging in Visual Studio on
Windows?
VS is slow when setting break point at inline functions.

+    DCHECK(frame_);
+    return *frame_;
+  }
+
+  void ReplaceActiveSuggestionRange(const String&);
+
+  bool suggestion_menu_is_open_;

[yosin_UTC9, 2017/06/20 01:46:37]

nit: s/suggetions_menu_is_open_/is_suggestions_menu_open_/
or s/suggetions_menu_is_open_/is_menu_open_/

See "Precede boolean values with words like "is" and "did"" in [1]

[1]
https://docs.google.com/document/d/1ZQLiQKw9hCOyDDhDS4JhckhuiJmLqSbw9FLfySMyx...

+  Member<LocalFrame> frame_;

[yosin_UTC9, 2017/06/20 01:46:37]

nit: s/Member<LocalFrame>/const Member<LocalFrame>/

+  mojom::blink::TextSuggestionHostPtr text_suggestion_host_;
+
+  DISALLOW_COPY_AND_ASSIGN(TextSuggestionController);
+};
+
+}  // namespace blink
+
+#endif  // TextSuggestionController_h