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

ui/accessibility/platform/ax_platform_node_base.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 "ui/accessibility/platform/ax_platform_node_base.h"
 
 #include "base/strings/utf_string_conversions.h"
+#include "ui/accessibility/ax_action_data.h"
 #include "ui/accessibility/ax_node_data.h"
 #include "ui/accessibility/platform/ax_platform_node_delegate.h"
 #include "ui/gfx/geometry/rect_conversions.h"
 
 namespace ui {
 
 void AXPlatformNodeBase::Init(AXPlatformNodeDelegate* delegate) {
   delegate_ = delegate;
 }
 
@@ skipping 179 matching lines @@
   CHECK(!delegate_);
 }
 
 // static
 AXPlatformNodeBase* AXPlatformNodeBase::FromNativeViewAccessible(
     gfx::NativeViewAccessible accessible) {
   return static_cast<AXPlatformNodeBase*>(
       AXPlatformNode::FromNativeViewAccessible(accessible));
 }
 
+bool AXPlatformNodeBase::SetTextSelection(int start_offset, int end_offset) {
+  ui::AXActionData action_data;
+  action_data.action = ui::AX_ACTION_SET_SELECTION;
+  action_data.anchor_node_id = action_data.focus_node_id = GetData().id;
+  action_data.anchor_offset = start_offset;
+  action_data.focus_offset = end_offset;
+  DCHECK(delegate_);
+  return delegate_->AccessibilityPerformAction(action_data);
+}
+
 }  // namespace ui