Introduces the speech recognition UI to app_list.

ui/app_list/app_list_view_delegate.h

Index: ui/app_list/app_list_view_delegate.h
diff --git a/ui/app_list/app_list_view_delegate.h b/ui/app_list/app_list_view_delegate.h
index 4da51a67ee6384eaf72e0c08d0e2ce47b4af2744..12414fe4cd65c05de7b440c0531a65bdf6e4c1a1 100644
--- a/ui/app_list/app_list_view_delegate.h
+++ b/ui/app_list/app_list_view_delegate.h
@@ -31,6 +31,7 @@ class AppListItemModel;
 class AppListModel;
 class SearchResult;
 class SigninDelegate;
+class SpeechUIModel;
 
 class APP_LIST_EXPORT AppListViewDelegate {
  public:
@@ -71,6 +72,9 @@ class APP_LIST_EXPORT AppListViewDelegate {
   // Gets the SigninDelegate for the app list. Owned by the AppListViewDelegate.
   virtual SigninDelegate* GetSigninDelegate() = 0;
 
+  // Gets the SpeechUIModel for the app list. Owned by the AppListViewDelegate.
+  virtual SpeechUIModel* GetSpeechUI() = 0;
+
   // Gets a path to a shortcut for the given app. Returns asynchronously as the
   // shortcut may not exist yet.
   virtual void GetShortcutPathForApp(