Remove persisted docked windows

chrome/browser/ui/views/apps/chrome_native_app_window_views.cc

 // Copyright 2014 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 "chrome/browser/ui/views/apps/chrome_native_app_window_views.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "apps/ui/views/app_window_frame_view.h"
@@ skipping 198 matching lines @@
   else if (preferred_size_.width() < kMinPanelWidth)
     preferred_size_.set_width(kMinPanelWidth);
 
   if (preferred_size_.height() == 0)
     preferred_size_.set_height(kDefaultPanelHeight);
   else if (preferred_size_.height() < kMinPanelHeight)
     preferred_size_.set_height(kMinPanelHeight);
 
   // When a panel is not docked it will be placed at a default origin in the
   // currently active target root window.
+  // TODO(afakhry): Remove in M58.
   bool use_default_bounds = create_params.state != ui::SHOW_STATE_DOCKED;
   // Sanitize initial origin reseting it in case it was not specified.
   using BoundsSpecification = AppWindow::BoundsSpecification;
   bool position_specified =
       initial_window_bounds.x() != BoundsSpecification::kUnspecifiedPosition &&
       initial_window_bounds.y() != BoundsSpecification::kUnspecifiedPosition;
   params.bounds = (use_default_bounds || !position_specified) ?
       gfx::Rect(preferred_size_) :
       gfx::Rect(initial_window_bounds.origin(), preferred_size_);
   OnBeforePanelWidgetInit(use_default_bounds, &params, widget());
@@ skipping 145 matching lines @@
     InitializePanelWindow(create_params);
   } else {
     InitializeDefaultWindow(create_params);
   }
   extension_keybinding_registry_.reset(new ExtensionKeybindingRegistryViews(
       Profile::FromBrowserContext(app_window->browser_context()),
       widget()->GetFocusManager(),
       extensions::ExtensionKeybindingRegistry::PLATFORM_APPS_ONLY,
       NULL));
 }