Revert of Prevents double-clicks on a tab close button from aslo maximizing the browser

ash/wm/workspace/workspace_event_handler.h

Index: ash/wm/workspace/workspace_event_handler.h
diff --git a/ash/wm/workspace/workspace_event_handler.h b/ash/wm/workspace/workspace_event_handler.h
index 0610537e8cf5e114d9329011e9bcd488f5a0648f..f9498217207e99705a39be1f11105f3cefd79003 100644
--- a/ash/wm/workspace/workspace_event_handler.h
+++ b/ash/wm/workspace/workspace_event_handler.h
@@ -36,13 +36,6 @@
 
   MultiWindowResizeController multi_window_resize_controller_;
 
-  // The non-client component for the target of a MouseEvent or GestureEvent.
-  // Events can be destructive to the window tree, which can cause the
-  // component of a ui::EF_IS_DOUBLE_CLICK event to no longer be the same as
-  // that of the initial click. Acting on a double click should only occur for
-  // matching components. This will be set for left clicks, and tap events.
-  int click_component_;
-
   DISALLOW_COPY_AND_ASSIGN(WorkspaceEventHandler);
 };