Fix the Crash in the launcher's start page (a better approach).

ui/app_list/views/search_result_container_view.cc

 // Copyright (c) 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/app_list/views/search_result_container_view.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 15 matching lines @@
 
 void SearchResultContainerView::SetResults(
     AppListModel::SearchResults* results) {
   if (results_)
     results_->RemoveObserver(this);
 
   results_ = results;
   if (results_)
     results_->AddObserver(this);
 
-  DoUpdate();
+  Update();
 }
 
 void SearchResultContainerView::SetSelectedIndex(int selected_index) {
   DCHECK(IsValidSelectionIndex(selected_index));
   int old_selected = selected_index_;
   selected_index_ = selected_index;
   UpdateSelectedIndex(old_selected, selected_index_);
 }
 
 void SearchResultContainerView::ClearSelectedIndex() {
   int old_selected = selected_index_;
   selected_index_ = -1;
   UpdateSelectedIndex(old_selected, selected_index_);
 }
 
 bool SearchResultContainerView::IsValidSelectionIndex(int index) const {
   return index >= 0 && index <= num_results() - 1;
 }
 
-void SearchResultContainerView::ScheduleUpdate() {
-  // When search results are added one by one, each addition generates an update
-  // request. Consolidates those update requests into one Update call.
-  if (!update_factory_.HasWeakPtrs()) {
-    base::ThreadTaskRunnerHandle::Get()->PostTask(
-        FROM_HERE, base::Bind(&SearchResultContainerView::DoUpdate,
-                              update_factory_.GetWeakPtr()));
-  }
+void SearchResultContainerView::Update() {
+  update_factory_.InvalidateWeakPtrs();
+  num_results_ = DoUpdate();
+  Layout();
+  if (delegate_)
+    delegate_->OnSearchResultContainerResultsChanged();
 }
 
 bool SearchResultContainerView::UpdateScheduled() {
   return update_factory_.HasWeakPtrs();
 }
 
 void SearchResultContainerView::ListItemsAdded(size_t start, size_t count) {
   ScheduleUpdate();
 }
 
 void SearchResultContainerView::ListItemsRemoved(size_t start, size_t count) {
   ScheduleUpdate();
 }
 
 void SearchResultContainerView::ListItemMoved(size_t index,
                                               size_t target_index) {
   ScheduleUpdate();
 }
 
 void SearchResultContainerView::ListItemsChanged(size_t start, size_t count) {
   ScheduleUpdate();
 }
 
-void SearchResultContainerView::DoUpdate() {
-  update_factory_.InvalidateWeakPtrs();
-  num_results_ = Update();
-  Layout();
-  if (delegate_)
-    delegate_->OnSearchResultContainerResultsChanged();
+void SearchResultContainerView::ScheduleUpdate() {
+  // When search results are added one by one, each addition generates an update
+  // request. Consolidates those update requests into one Update call.
+  if (!update_factory_.HasWeakPtrs()) {
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
+        FROM_HERE, base::Bind(&SearchResultContainerView::Update,
+                              update_factory_.GetWeakPtr()));
+  }
 }
 
 }  // namespace app_list