Remove persisted docked windows

ui/views/widget/native_widget_aura.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/views/widget/native_widget_aura.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/memory/ptr_util.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 516 matching lines @@
 void NativeWidgetAura::ShowMaximizedWithBounds(
     const gfx::Rect& restored_bounds) {
   SetRestoreBounds(window_, restored_bounds);
   ShowWithWindowState(ui::SHOW_STATE_MAXIMIZED);
 }
 
 void NativeWidgetAura::ShowWithWindowState(ui::WindowShowState state) {
   if (!window_)
     return;
 
+  // TODO(afakhry): Remove Docked Windows in M58.
   if (state == ui::SHOW_STATE_MAXIMIZED || state == ui::SHOW_STATE_FULLSCREEN ||
       state == ui::SHOW_STATE_DOCKED) {
     window_->SetProperty(aura::client::kShowStateKey, state);
   }
   window_->Show();
   if (delegate_->CanActivate()) {
     if (state != ui::SHOW_STATE_INACTIVE)
       Activate();
     // SetInitialFocus() should be always be called, even for
     // SHOW_STATE_INACTIVE. If the window has to stay inactive, the method will
@@ skipping 438 matching lines @@
   destroying_ = true;
   if (ownership_ == Widget::InitParams::NATIVE_WIDGET_OWNS_WIDGET)
     delete delegate_;
   else
     CloseNow();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // NativeWidgetAura, private:
 
+// TODO(afakhry): Remove Docked Windows in M58.
 bool NativeWidgetAura::IsDocked() const {
   return window_ &&
          window_->GetProperty(aura::client::kShowStateKey) ==
              ui::SHOW_STATE_DOCKED;
 }
 
 void NativeWidgetAura::SetInitialFocus(ui::WindowShowState show_state) {
   // The window does not get keyboard messages unless we focus it.
   if (!GetWidget()->SetInitialFocus(show_state))
     window_->Focus();
@@ skipping 198 matching lines @@
     gfx::NativeView native_view) {
   aura::client::CaptureClient* capture_client =
       aura::client::GetCaptureClient(native_view->GetRootWindow());
   if (!capture_client)
     return nullptr;
   return capture_client->GetGlobalCaptureWindow();
 }
 
 }  // namespace internal
 }  // namespace views