Move CustomLauncherPageContents from apps to c/b/ui/app_list

chrome/browser/ui/app_list/app_list_view_delegate.h

Index: chrome/browser/ui/app_list/app_list_view_delegate.h
diff --git a/chrome/browser/ui/app_list/app_list_view_delegate.h b/chrome/browser/ui/app_list/app_list_view_delegate.h
index 52b3bd4c7264761284ff190d94816ed1fd7f5de5..9df40148a12a8e706c5d745c7b79448f9a204c49 100644
--- a/chrome/browser/ui/app_list/app_list_view_delegate.h
+++ b/chrome/browser/ui/app_list/app_list_view_delegate.h
@@ -30,11 +30,8 @@
 class AppListControllerDelegate;
 class Profile;
 
-namespace apps {
-class CustomLauncherPageContents;
-}
-
 namespace app_list {
+class CustomLauncherPageContents;
 class LauncherPageEventDispatcher;
 class SearchController;
 class SearchResourceManager;
@@ -193,7 +190,7 @@ class AppListViewDelegate : public app_list::AppListViewDelegate,
   ScopedObserver<SigninManagerBase, AppListViewDelegate> scoped_observer_;
 
   // Window contents of additional custom launcher pages.
-  std::vector<std::unique_ptr<apps::CustomLauncherPageContents>>
+  std::vector<std::unique_ptr<app_list::CustomLauncherPageContents>>
       custom_page_contents_;
 
   // Registers for NOTIFICATION_APP_TERMINATING to unload custom launcher pages.