Remove SetCursorForWindow

This was added for WS, but no longer used.

Bug: None
Change-Id: I02704c8bf7c968a42c79a86191396e998c42662b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1783361
Commit-Queue: Mitsuru Oshima <oshima@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#693182}

ui/wm/core/compound_event_filter.cc

@@ -80,28 +80,6 @@ void CompoundEventFilter::RemoveHandler(ui::EventHandler* handler) {
   handlers_.RemoveObserver(handler);
 }
 
-void CompoundEventFilter::SetCursorForWindow(aura::Window* window,
-                                             const ui::Cursor& cursor) {
-  if (last_window_that_provided_cursor_.windows().empty())
-    return;
-
-  aura::Window* last_window = last_window_that_provided_cursor_.windows()[0];
-
-  // Determine if the window hierarchies match, i.e. if |window| is an ancestor
-  // or descendent of |last_window_that_provided_cursor_|.
-  if (!window->Contains(last_window) && !last_window->Contains(window))
-    return;
-
-  aura::Window* root_window = window->GetRootWindow();
-  if (!root_window)
-    return;
-
-  aura::client::CursorClient* cursor_client =
-      aura::client::GetCursorClient(root_window);
-  if (cursor_client)
-    cursor_client->SetCursor(cursor);
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 // CompoundEventFilter, private:
 
@@ -115,9 +93,6 @@ void CompoundEventFilter::UpdateCursor(aura::Window* target,
   if (drag_drop_client && drag_drop_client->IsDragDropInProgress())
     return;
 
-  last_window_that_provided_cursor_.RemoveAll();
-  last_window_that_provided_cursor_.Add(target);
-
   aura::client::CursorClient* cursor_client =
       aura::client::GetCursorClient(root_window);
   if (cursor_client) {

ui/wm/core/compound_event_filter.h

@@ -8,7 +8,6 @@
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/observer_list.h"
-#include "ui/aura/window_tracker.h"
 #include "ui/events/event.h"
 #include "ui/events/event_handler.h"
 #include "ui/gfx/native_widget_types.h"
@@ -48,13 +47,6 @@ class WM_CORE_EXPORT CompoundEventFilter : public ui::EventHandler {
   void AddHandler(ui::EventHandler* filter);
   void RemoveHandler(ui::EventHandler* filter);
 
-  // If |window| is part of the same window hierarchy as the last window to have
-  // provided the cursor (i.e. for which UpdateCursor was called), updates the
-  // cursor manager with |cursor|. Otherwise, this call does nothing. This means
-  // calling SetCursorForWindow on an arbitrary window that the pointer is not
-  // over will do nothing.
-  void SetCursorForWindow(aura::Window* window, const ui::Cursor& cursor);
-
  private:
   // Updates the cursor if the target provides a custom one, and provides
   // default resize cursors for window edges.
@@ -85,9 +77,6 @@ class WM_CORE_EXPORT CompoundEventFilter : public ui::EventHandler {
   // Additional pre-target event handlers.
   base::ObserverList<ui::EventHandler, true>::Unchecked handlers_;
 
-  // Holds the last window that was used to update CursorClient in UpdateCursor.
-  aura::WindowTracker last_window_that_provided_cursor_;
-
   DISALLOW_COPY_AND_ASSIGN(CompoundEventFilter);
 };