Fix SpeechUIModel lifetime issue in Chrome's AppListViewDelegate when switching profiles

ash/shell/app_list.cc

Index: ash/shell/app_list.cc
diff --git a/ash/shell/app_list.cc b/ash/shell/app_list.cc
index bf5a44b504b9e6d23641f3d4cbea132b31e3d980..1c00f2b66431d1b49e193a43d2a169696efbf707 100644
--- a/ash/shell/app_list.cc
+++ b/ash/shell/app_list.cc
@@ -197,8 +197,7 @@ class ExampleSearchResult : public app_list::SearchResult {
 class ExampleAppListViewDelegate : public app_list::AppListViewDelegate {
  public:
   ExampleAppListViewDelegate()
-      : model_(new app_list::AppListModel),
-        speech_ui_(app_list::SPEECH_RECOGNITION_OFF) {
+      : model_(new app_list::AppListModel) {
     PopulateApps();
     DecorateSearchBox(model_->search_box());
   }