Hide virtual keyboard before removing it from view hierarchy.

ash/root_window_controller.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 "ash/root_window_controller.h"
 
 #include <queue>
 #include <vector>
 
 #include "ash/ash_touch_exploration_manager_chromeos.h"
@@ skipping 659 matching lines @@
     keyboard::KeyboardController* keyboard_controller) {
   if (!keyboard_controller ||
       !keyboard_controller->keyboard_container_initialized()) {
     return;
   }
   aura::Window* keyboard_container = keyboard_controller->GetContainerWindow();
   if (keyboard_container->GetRootWindow() == GetRootWindow()) {
     aura::Window* parent =
         GetContainer(kShellWindowId_ImeWindowParentContainer);
     DCHECK(parent);
+    // Virtual keyboard may be deactivated while still showing, hide the
+    // keyboard before removing it from view hierarchy.
+    keyboard_controller->HideKeyboard(
+        keyboard::KeyboardController::HIDE_REASON_AUTOMATIC);
     parent->RemoveChild(keyboard_container);
-    // Virtual keyboard may be deactivated while still showing, notify all
-    // observers that keyboard bounds changed to 0 before remove them.
-    keyboard_controller->NotifyKeyboardBoundsChanging(gfx::Rect());
     keyboard_controller->RemoveObserver(wm_shelf_->shelf_layout_manager());
     keyboard_controller->RemoveObserver(panel_layout_manager());
     keyboard_controller->RemoveObserver(docked_window_layout_manager());
     keyboard_controller->RemoveObserver(
         workspace_controller()->layout_manager());
     keyboard_controller->RemoveObserver(
         always_on_top_controller_->GetLayoutManager());
     WmShell::Get()->NotifyVirtualKeyboardActivated(false);
   }
 }
@@ skipping 437 matching lines @@
     EnableTouchHudProjection();
   else
     DisableTouchHudProjection();
 }
 
 RootWindowController* GetRootWindowController(const aura::Window* root_window) {
   return root_window ? GetRootWindowSettings(root_window)->controller : nullptr;
 }
 
 }  // namespace ash