Remove unused roles(EditableText, SplitGroup, GrowArea) from Chromium.

content/renderer/accessibility/blink_ax_tree_source.cc

 // Copyright 2014 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 "content/renderer/accessibility/blink_ax_tree_source.h"
 
 #include <set>
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
@@ skipping 319 matching lines @@
     dst->AddStringAttribute(
         ui::AX_ATTR_HTML_TAG,
         base::StringToLowerASCII(UTF16ToUTF8(element.tagName())));
     for (unsigned i = 0; i < element.attributeCount(); ++i) {
       std::string name = base::StringToLowerASCII(UTF16ToUTF8(
           element.attributeLocalName(i)));
       std::string value = UTF16ToUTF8(element.attributeValue(i));
       dst->html_attributes.push_back(std::make_pair(name, value));
     }
 
-    if (dst->role == ui::AX_ROLE_EDITABLE_TEXT ||
-        dst->role == ui::AX_ROLE_TEXT_AREA ||
+    if (dst->role == ui::AX_ROLE_TEXT_AREA ||
         dst->role == ui::AX_ROLE_TEXT_FIELD) {
       dst->AddIntAttribute(ui::AX_ATTR_TEXT_SEL_START, src.selectionStart());
       dst->AddIntAttribute(ui::AX_ATTR_TEXT_SEL_END, src.selectionEnd());
 
       WebVector<int> src_line_breaks;
       src.lineBreaks(src_line_breaks);
       if (src_line_breaks.size() > 0) {
         std::vector<int32> line_breaks;
         line_breaks.reserve(src_line_breaks.size());
         for (size_t i = 0; i < src_line_breaks.size(); ++i)
@@ skipping 211 matching lines @@
     AddIntListAttributeFromWebObjects(ui::AX_ATTR_OWNS_IDS, owns, dst);
 }
 
 blink::WebDocument BlinkAXTreeSource::GetMainDocument() const {
   if (render_frame_ && render_frame_->GetWebFrame())
     return render_frame_->GetWebFrame()->document();
   return WebDocument();
 }
 
 }  // namespace content