[WIP] Add support for Android SuggestionSpans when editing text

third_party/WebKit/Source/core/editing/TextSuggestionController.h

Index: third_party/WebKit/Source/core/editing/TextSuggestionController.h
diff --git a/third_party/WebKit/Source/core/editing/TextSuggestionController.h b/third_party/WebKit/Source/core/editing/TextSuggestionController.h
new file mode 100644
index 0000000000000000000000000000000000000000..fd931480769ba5257dddc536f76ea5ffad808a3c
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+++ b/third_party/WebKit/Source/core/editing/TextSuggestionController.h
@@ -0,0 +1,60 @@
+// 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/editing/TextSuggestionInfo.h"
+#include "platform/heap/Handle.h"
+#include "public/platform/WebVector.h"
+#include "public/platform/input_host.mojom-blink.h"
+#include "public/web/WebTextSuggestionInfo.h"
+
+namespace blink {
+
+class Document;
+class LocalFrame;
+
+class CORE_EXPORT TextSuggestionController final
+    : public GarbageCollectedFinalized<TextSuggestionController> {
+  WTF_MAKE_NONCOPYABLE(TextSuggestionController);
+
+ public:
+  static TextSuggestionController* create(LocalFrame&);
+  DECLARE_TRACE();
+
+  bool suggestionMenuIsOpen() const;
+
+  void applySuggestionReplacement(int documentMarkerID, int suggestionIndex);
+  void deleteSuggestionHighlight();
+  void suggestionMenuClosed();
+
+  void handlePotentialTextSuggestionTap();
+  void prepareForTextSuggestionMenuToBeShown();
+  void removeSuggestionMarkersAffectedByEditing(
+      bool doNotRemoveIfSelectionAtWordBoundary);
+
+ private:
+  Document& document() const;
+  bool isAvailable() const;
+
+  LocalFrame& frame() const {
+    DCHECK(m_frame);
+    return *m_frame;
+  }
+
+  explicit TextSuggestionController(LocalFrame& frame);
+
+  Vector<blink::TextSuggestionInfo>
+  getTextSuggestionInfosUnderCaretAndAddHighlight() const;
+
+  bool m_suggestionMenuIsOpen;
+  Member<LocalFrame> m_frame;
+  mojom::blink::TextSuggestionHostPtr text_suggestion_host_;
+};
+
+}  // namespace blink
+
+#endif  // TextSuggestionController_h