Move cursor when it's hidden so that UX can update correctly

ui/aura/root_window.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/aura/root_window.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 213 matching lines @@
   if (dnd_client && dnd_client->IsDragDropInProgress())
     cursor = dnd_client->GetDragCursor();
 
   last_cursor_ = cursor;
   // A lot of code seems to depend on NULL cursors actually showing an arrow,
   // so just pass everything along to the host.
   host_->SetCursor(cursor);
 }
 
 void RootWindow::ShowCursor(bool show) {
-  cursor_shown_ = show;
-  host_->ShowCursor(show);
+  // Send entered / exited so that visual state can be updated to match
+  // cursor state.
+  if (show != cursor_shown_) {
+    cursor_shown_ = show;
+    host_->ShowCursor(show);
+    Env::GetInstance()->SetCursorShown(show);
+    PostMouseMoveEventAfterWindowChange();
+  }
 }
 
 void RootWindow::MoveCursorTo(const gfx::Point& location_in_dip) {
   gfx::Point location = location_in_dip;
   layer()->transform().TransformPoint(location);
   host_->MoveCursorTo(ui::ConvertPointToPixel(layer(), location));
   SetLastMouseLocation(this, location_in_dip);
 }
 
 bool RootWindow::ConfineCursorToWindow() {
@@ skipping 789 matching lines @@
 void RootWindow::UnlockCompositor() {
   DCHECK(compositor_lock_);
   compositor_lock_ = NULL;
   if (draw_on_compositor_unlock_) {
     draw_on_compositor_unlock_ = false;
     ScheduleDraw();
   }
 }
 
 }  // namespace aura