Add Apps.AppListSearchResultDistanceFromOrigin UMA stat.

ui/app_list/views/search_result_list_view.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/app_list/views/search_result_list_view.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 126 matching lines @@
 }
 
 void SearchResultListView::OnContainerSelected(bool from_bottom,
                                                bool /*directional_movement*/) {
   if (num_results() == 0)
     return;
 
   SetSelectedIndex(from_bottom ? num_results() - 1 : 0);
 }
 
+void SearchResultListView::NotifyFirstResultYIndex(int y_index) {
+  for (size_t i = 0; i < static_cast<size_t>(num_results()); ++i)
+    GetResultViewAt(i)->result()->set_distance_from_origin(i + y_index);
+}
+
+int SearchResultListView::GetYSize() {
+  return num_results();
+}
+
 int SearchResultListView::Update() {
   std::vector<SearchResult*> display_results =
       AppListModel::FilterSearchResultsByDisplayType(
           results(),
           SearchResult::DISPLAY_LIST,
           results_container_->child_count());
 
   for (size_t i = 0; i < static_cast<size_t>(results_container_->child_count());
        ++i) {
     SearchResultView* result_view = GetResultViewAt(i);
@@ skipping 91 matching lines @@
         view->result(), action_index, event_flags);
   }
 }
 
 void SearchResultListView::OnSearchResultInstalled(SearchResultView* view) {
   if (delegate_ && view->result())
     delegate_->OnResultInstalled(view->result());
 }
 
 }  // namespace app_list