[WIP] Add support for Android SuggestionSpans when editing text

third_party/WebKit/Source/core/editing/CompositionUnderline.cpp

 // 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.
 
 #include "core/editing/CompositionUnderline.h"
 
 namespace blink {
 
 CompositionUnderline::CompositionUnderline(unsigned startOffset,
                                            unsigned endOffset,
                                            const Color& color,
                                            bool thick,
                                            const Color& backgroundColor)
-    : m_color(color), m_thick(thick), m_backgroundColor(backgroundColor) {
+    : CompositionUnderline(startOffset,
+                           endOffset,
+                           color,
+                           thick,
+                           backgroundColor,
+                           std::vector<std::string>()) {}
+
+CompositionUnderline::CompositionUnderline(
+    unsigned startOffset,
+    unsigned endOffset,
+    const Color& color,
+    bool thick,
+    const Color& backgroundColor,
+    const std::vector<std::string>& suggestions)
+    : m_color(color),
+      m_thick(thick),
+      m_backgroundColor(backgroundColor),
+      m_suggestions(suggestions) {
   // Sanitize offsets by ensuring a valid range corresponding to the last
   // possible position.
   // TODO(wkorman): Consider replacing with DCHECK_LT(startOffset, endOffset).
   m_startOffset =
       std::min(startOffset, std::numeric_limits<unsigned>::max() - 1u);
   m_endOffset = std::max(m_startOffset + 1u, endOffset);
 }
 
 }  // namespace blink