Initialize member variables from all constructors

content/browser/accessibility/browser_accessibility_manager.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 "content/browser/accessibility/browser_accessibility_manager.h"
 
 #include <stddef.h>
 
 #include "base/logging.h"
 #include "build/build_config.h"
@@ skipping 123 matching lines @@
 
 BrowserAccessibilityManager::BrowserAccessibilityManager(
     const ui::AXTreeUpdate& initial_tree,
     BrowserAccessibilityDelegate* delegate,
     BrowserAccessibilityFactory* factory)
     : delegate_(delegate),
       factory_(factory),
       tree_(new ui::AXSerializableTree()),
       user_is_navigating_away_(false),
       osk_state_(OSK_ALLOWED),
+      last_focused_node_(nullptr),
+      last_focused_manager_(nullptr),
       ax_tree_id_(AXTreeIDRegistry::kNoAXTreeID),
       parent_node_id_from_parent_tree_(0) {
   tree_->SetDelegate(this);
   Initialize(initial_tree);
 }
 
 BrowserAccessibilityManager::~BrowserAccessibilityManager() {
   tree_.reset(NULL);
   g_ax_tree_id_map.Get().erase(ax_tree_id_);
 }
@@ skipping 654 matching lines @@
       tree_->CreateTreeSource());
   ui::AXTreeSerializer<const ui::AXNode*,
                        ui::AXNodeData,
                        ui::AXTreeData> serializer(tree_source.get());
   ui::AXTreeUpdate update;
   serializer.SerializeChanges(tree_->root(), &update);
   return update;
 }
 
 }  // namespace content