Center and change the aspect ratio for the experimental app list. [Win]

chrome/browser/ui/app_list/app_list_positioner.h

Index: chrome/browser/ui/app_list/app_list_positioner.h
diff --git a/chrome/browser/ui/app_list/app_list_positioner.h b/chrome/browser/ui/app_list/app_list_positioner.h
index f743a92e48d127ec253ab8ea69ce02b0f6e44fdc..43b6cbbe305995179256f7c8188ecf743f4e9883 100644
--- a/chrome/browser/ui/app_list/app_list_positioner.h
+++ b/chrome/browser/ui/app_list/app_list_positioner.h
@@ -61,6 +61,10 @@ class AppListPositioner {
   // anchor point will potentially position the window under it.
   gfx::Point GetAnchorPointForScreenCorner(ScreenCorner corner) const;
 
+  // Finds the position for a window to anchor it to the center of the screen.
+  // Returns the intended coordinates for the center of the window.
+  gfx::Point GetAnchorPointForScreenCenter() const;
+
   // Finds the position for a window to anchor it to the corner of the shelf.
   // The window will be aligned to the left of the work area for horizontal
   // shelves, or to the top for vertical shelves. |shelf_edge| specifies the