app_list: Make first col move for invalid page switch attempt.

BUG=None.
TEST=Verify that first/last cols icons also moves when trying to make an invalid page transition in app list.

TBR=sky@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10832169

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@150218 0039d316-1c4b-4281-b951-d872f2087c98

ui/app_list/apps_grid_view.cc

@@ -149,9 +149,9 @@ void AppsGridView::Layout() {
     } else {
       const int col = i % cols_;
       if (transition_offset > 0)
-        x_offset += transition_offset * col;
+        x_offset += transition_offset * (col + 1);
       else
-        x_offset += transition_offset * (cols_ - col - 1);
+        x_offset += transition_offset * (cols_ - col);
     }
 
     gfx::Rect adjusted_slot(tile_slot);