Make AXPlatformNodeDelegate::GetData() const

ui/accessibility/platform/test_ax_node_wrapper.cc

 // Copyright 2015 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 "base/containers/hash_tables.h"
 #include "ui/accessibility/ax_action_data.h"
 #include "ui/accessibility/platform/test_ax_node_wrapper.h"
 
 namespace ui {
 
@@ skipping 53 matching lines @@
 
 // static
 void TestAXNodeWrapper::SetGlobalCoordinateOffset(const gfx::Vector2d& offset) {
   g_offset = offset;
 }
 
 TestAXNodeWrapper::~TestAXNodeWrapper() {
   platform_node_->Destroy();
 }
 
-const AXNodeData& TestAXNodeWrapper::GetData() {
+const AXNodeData& TestAXNodeWrapper::GetData() const {
   return node_->data();
 }
 
 gfx::NativeWindow TestAXNodeWrapper::GetTopLevelWidget() {
   return nullptr;
 }
 
 gfx::NativeViewAccessible TestAXNodeWrapper::GetParent() {
   TestAXNodeWrapper* parent_wrapper = GetOrCreate(tree_, node_->parent());
   return parent_wrapper ?
@@ skipping 39 matching lines @@
 
 void TestAXNodeWrapper::DoDefaultAction() {}
 
 TestAXNodeWrapper::TestAXNodeWrapper(AXTree* tree, AXNode* node)
     : tree_(tree),
       node_(node),
       platform_node_(AXPlatformNode::Create(this)) {
 }
 
 }  // namespace ui