ash: Update app list button.

ash/test/launcher_view_test_api.h

Index: ash/test/launcher_view_test_api.h
diff --git a/ash/test/launcher_view_test_api.h b/ash/test/launcher_view_test_api.h
index f44f6179167d4f1f87faeee518fc071c45fb7b61..fed0a2bcc6158d02633bc80834ccfa0c4df89021 100644
--- a/ash/test/launcher_view_test_api.h
+++ b/ash/test/launcher_view_test_api.h
@@ -14,6 +14,7 @@ class Rect;
 namespace ash {
 
 namespace internal {
+class AppListButton;
 class LauncherButton;
 class LauncherView;
 }
@@ -39,6 +40,9 @@ class LauncherViewTestAPI {
   const gfx::Rect& GetBoundsByIndex(int index);
   const gfx::Rect& GetIdealBoundsByIndex(int index);
 
+  // Gets the app list button.
+  internal::AppListButton* GetAppListButton();
+
   // Returns true if overflow button is visible.
   bool IsOverflowButtonVisible();