overview: Nix unused OverviewGrid::GetOverviewItemIterContainingWindow

Bug: None
Change-Id: Iedec344fda56e80c083b31d968729cfc51b32d6e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1983357Reviewed-by: Sammie Quon <sammiequon@chromium.org>
Commit-Queue: Avery Musbach <amusbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#727653}

ash/wm/overview/overview_grid.cc

@@ -1817,14 +1817,6 @@ bool OverviewGrid::FitWindowRectsInBounds(
   return true;
 }
 
-std::vector<std::unique_ptr<OverviewItem>>::iterator
-OverviewGrid::GetOverviewItemIterContainingWindow(aura::Window* window) {
-  return std::find_if(window_list_.begin(), window_list_.end(),
-                      [window](std::unique_ptr<OverviewItem>& item) {
-                        return item->GetWindow() == window;
-                      });
-}
-
 size_t OverviewGrid::GetOverviewItemIndex(OverviewItem* item) const {
   auto iter = std::find_if(window_list_.begin(), window_list_.end(),
                            base::MatchesUniquePtr(item));

ash/wm/overview/overview_grid.h

@@ -413,10 +413,6 @@ class ASH_EXPORT OverviewGrid : public SplitViewObserver,
       int* out_min_right,
       int* out_max_right);
 
-  // Returns the overview item iterator that contains |window|.
-  std::vector<std::unique_ptr<OverviewItem>>::iterator
-  GetOverviewItemIterContainingWindow(aura::Window* window);
-
   // Returns the index of |item| in |window_list_|.
   size_t GetOverviewItemIndex(OverviewItem* item) const;