[mus+ash] Removes WmWindow from RootWindowcontroller implementation

ash/wm/window_util.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/wm/window_util.h"
 
 #include <vector>
 
 #include "ash/ash_constants.h"
 #include "ash/public/cpp/config.h"
@@ skipping 13 matching lines @@
 #include "ui/aura/mus/window_tree_client.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_delegate.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/base/hit_test.h"
 #include "ui/compositor/dip_util.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/widget.h"
+#include "ui/wm/core/easy_resize_window_targeter.h"
 #include "ui/wm/core/window_util.h"
 #include "ui/wm/public/activation_client.h"
 
 namespace ash {
 namespace wm {
 
 namespace {
 
 // Moves |window| to the given |root| window's corresponding container, if it is
 // not already in the same root window. Returns true if |window| was moved.
@@ skipping 94 matching lines @@
       << container->GetName();
   container->SetProperty(kSnapChildrenToPixelBoundary, true);
 }
 
 int GetNonClientComponent(aura::Window* window, const gfx::Point& location) {
   return window->delegate()
              ? window->delegate()->GetNonClientComponent(location)
              : HTNOWHERE;
 }
 
+void SetChildrenUseExtendedHitRegionForWindow(aura::Window* window) {
+  window->SetProperty(kChildrenUseExtendedHitRegion, true);
+  gfx::Insets mouse_extend(-kResizeOutsideBoundsSize, -kResizeOutsideBoundsSize,
+                           -kResizeOutsideBoundsSize,
+                           -kResizeOutsideBoundsSize);
+  gfx::Insets touch_extend =
+      mouse_extend.Scale(kResizeOutsideBoundsScaleForTouch);
+  // TODO: EasyResizeWindowTargeter makes it so children get events outside
+  // their bounds. This only works in mash when mash is providing the non-client
+  // frame. Mus needs to support an api for the WindowManager that enables
+  // events to be dispatched to windows outside the windows bounds that this
+  // function calls into. http://crbug.com/679056.
+  window->SetEventTargeter(base::MakeUnique<::wm::EasyResizeWindowTargeter>(
+      window, mouse_extend, touch_extend));
+}
+
+bool ShouldUseExtendedHitRegionForWindow(const aura::Window* window) {
+  const aura::Window* parent = window->parent();
+  return parent && parent->GetProperty(kChildrenUseExtendedHitRegion);
+}
+
 void CloseWidgetForWindow(aura::Window* window) {
   if (Shell::GetAshConfig() == Config::MASH &&
       window->GetProperty(kWidgetCreationTypeKey) ==
           WidgetCreationType::FOR_CLIENT) {
     // NOTE: in the FOR_CLIENT case there is not necessarily a widget associated
     // with the window. Mash only creates widgets for top level windows if mash
     // renders the non-client frame.
     DCHECK(Shell::window_manager_client());
     Shell::window_manager_client()->RequestClose(window);
     return;
@@ skipping 12 matching lines @@
   window->AddPreTargetHandler(handler);
 }
 
 void RemoveLimitedPreTargetHandlerForWindow(ui::EventHandler* handler,
                                             aura::Window* window) {
   window->RemovePreTargetHandler(handler);
 }
 
 }  // namespace wm
 }  // namespace ash