wip: Refactoring Ash's AppListController, moving the bulk of the logic to chrome/browser/ui/ash/app…

ash/shell_delegate.h

Index: ash/shell_delegate.h
diff --git a/ash/shell_delegate.h b/ash/shell_delegate.h
index c66eb15d76e75372c648e612f42d623fcdda7c7a..fff03f56a3c8581f724fcbd26b55e01977472ee7 100644
--- a/ash/shell_delegate.h
+++ b/ash/shell_delegate.h
@@ -13,6 +13,7 @@
 #include "base/strings/string16.h"
 
 namespace app_list {
+class AppListController;
 class AppListViewDelegate;
 }
 
@@ -116,9 +117,8 @@ class ASH_EXPORT ShellDelegate {
   virtual void RemoveVirtualKeyboardStateObserver(
       VirtualKeyboardStateObserver* observer) = 0;
 
-  // Get the AppListViewDelegate, creating one if it does not yet exist.
-  // Ownership stays with Chrome's AppListService, or the ShellDelegate.
-  virtual app_list::AppListViewDelegate* GetAppListViewDelegate() = 0;
+  // Get the GetAppListController. Ownership stays with Chrome.
+  virtual app_list::AppListController* GetAppListController() = 0;
 
   // Creates a new ShelfDelegate. Shell takes ownership of the returned
   // value.