[mus+ash] Removes WmWindow from RootWindowcontroller implementation

ash/wm_window.cc

 // Copyright 2016 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.h"
 
 #include "ash/ash_constants.h"
 #include "ash/public/cpp/config.h"
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/public/cpp/window_properties.h"
@@ skipping 79 matching lines @@
     result[i] = WmWindow::GetAuraWindow(windows[i]);
   return result;
 }
 
 // static
 const aura::Window* WmWindow::GetAuraWindow(const WmWindow* wm_window) {
   return wm_window ? static_cast<const WmWindow*>(wm_window)->aura_window()
                    : nullptr;
 }
 
-bool WmWindow::ShouldUseExtendedHitRegion() const {
-  const WmWindow* parent = Get(window_->parent());
-  return parent &&
-         static_cast<const WmWindow*>(parent)
-             ->children_use_extended_hit_region_;
-}
-
 void WmWindow::Destroy() {
   delete window_;
   // WARNING: this has been deleted.
 }
 
 const WmWindow* WmWindow::GetRootWindow() const {
   return Get(window_->GetRootWindow());
 }
 
 RootWindowController* WmWindow::GetRootWindowController() {
@@ skipping 391 matching lines @@
 }
 
 void WmWindow::SetSnapsChildrenToPhysicalPixelBoundary() {
   wm::SetSnapsChildrenToPhysicalPixelBoundary(window_);
 }
 
 void WmWindow::SnapToPixelBoundaryIfNecessary() {
   wm::SnapWindowToPixelBoundary(window_);
 }
 
-void WmWindow::SetChildrenUseExtendedHitRegion() {
-  children_use_extended_hit_region_ = 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));
-}
-
 void WmWindow::AddTransientWindowObserver(WmTransientWindowObserver* observer) {
   if (!added_transient_observer_) {
     added_transient_observer_ = true;
     ::wm::TransientWindowManager::Get(window_)->AddObserver(this);
   }
   transient_observers_.AddObserver(observer);
 }
 
 void WmWindow::RemoveTransientWindowObserver(
     WmTransientWindowObserver* observer) {
@@ skipping 15 matching lines @@
     observer.OnTransientChildAdded(this, Get(transient));
 }
 
 void WmWindow::OnTransientChildRemoved(aura::Window* window,
                                        aura::Window* transient) {
   for (auto& observer : transient_observers_)
     observer.OnTransientChildRemoved(this, Get(transient));
 }
 
 }  // namespace ash