Implemented IA2::setSelection and related methods on text fields in Views.

ui/views/controls/textfield/textfield.cc

 // Copyright (c) 2012 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 "ui/views/controls/textfield/textfield.h"
 
 #include <string>
 #include <utility>
 
 #include "base/memory/ptr_util.h"
@@ skipping 879 matching lines @@
   }
   node_data->AddStringAttribute(ui::AX_ATTR_PLACEHOLDER,
                                 base::UTF16ToUTF8(GetPlaceholderText()));
 
   const gfx::Range range = GetSelectedRange();
   node_data->AddIntAttribute(ui::AX_ATTR_TEXT_SEL_START, range.start());
   node_data->AddIntAttribute(ui::AX_ATTR_TEXT_SEL_END, range.end());
 }
 
 bool Textfield::HandleAccessibleAction(const ui::AXActionData& action_data) {
+  if (action_data.action == ui::AX_ACTION_SET_SELECTION) {
+    const gfx::Range range(action_data.anchor_offset, action_data.focus_offset);
+    SetSelectionRange(range);
+  }
+
+  // Remaining actions cannot be performed on readonly fields.
   if (read_only())
     return View::HandleAccessibleAction(action_data);
 
   if (action_data.action == ui::AX_ACTION_SET_VALUE) {
     SetText(action_data.value);
     ClearSelection();
     return true;
   } else if (action_data.action == ui::AX_ACTION_REPLACE_SELECTED_TEXT) {
     InsertOrReplaceText(action_data.value);
     ClearSelection();
@@ skipping 1143 matching lines @@
 }
 
 void Textfield::OnCursorBlinkTimerFired() {
   DCHECK(ShouldBlinkCursor());
   gfx::RenderText* render_text = GetRenderText();
   render_text->set_cursor_visible(!render_text->cursor_visible());
   RepaintCursor();
 }
 
 }  // namespace views