overview: Remove unused parameter

Bug: None
Change-Id: I0b5c75f9134472428d7510a1370388c63dd518e2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2003926Reviewed-by: Sammie Quon <sammiequon@chromium.org>
Commit-Queue: Avery Musbach <amusbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#732237}

ash/wm/overview/overview_grid.cc

@@ -1501,7 +1501,7 @@ int OverviewGrid::CalculateWidthAndMaybeSetUnclippedBounds(OverviewItem* item,
   // Get the bounds of the window if there is a snapped window or a window
   // about to be snapped.
   base::Optional<gfx::RectF> split_view_bounds =
-      GetSplitviewBoundsMaintainingAspectRatio(item->GetWindow());
+      GetSplitviewBoundsMaintainingAspectRatio();
   if (!split_view_bounds) {
     item->set_unclipped_size(base::nullopt);
     return width;

ash/wm/overview/overview_utils.cc

@@ -376,8 +376,7 @@ gfx::Rect GetGridBoundsInScreen(
   return bounds;
 }
 
-base::Optional<gfx::RectF> GetSplitviewBoundsMaintainingAspectRatio(
-    aura::Window* window) {
+base::Optional<gfx::RectF> GetSplitviewBoundsMaintainingAspectRatio() {
   if (!ShouldAllowSplitView())
     return base::nullopt;
   if (!Shell::Get()->tablet_mode_controller()->InTabletMode())

ash/wm/overview/overview_utils.h

@@ -102,8 +102,7 @@ gfx::Rect GetGridBoundsInScreen(
 // Gets the bounds of a window if it were to be snapped or about to be snapped
 // in splitview. Returns nothing if we are not in tablet mode, or if we aren't
 // in splitview, or if we aren't showing a splitview preview.
-base::Optional<gfx::RectF> GetSplitviewBoundsMaintainingAspectRatio(
-    aura::Window* window);
+base::Optional<gfx::RectF> GetSplitviewBoundsMaintainingAspectRatio();
 
 // Check if kNewOverviewLayout is enabled for tablet mode.
 bool ShouldUseTabletModeGridLayout();