Created min size for print preview dialog and modified to allow the

ui/wm/core/window_modality_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 "ui/wm/core/window_modality_controller.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/capture_client.h"
 #include "ui/aura/env.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/aura/window_property.h"
 #include "ui/base/ui_base_types.h"
 #include "ui/events/event.h"
 #include "ui/events/event_target.h"
 #include "ui/events/gestures/gesture_recognizer.h"
 #include "ui/wm/core/window_animations.h"
 #include "ui/wm/core/window_util.h"
 
 namespace wm {
+// Key for native window property that indicates if the window should have

[Mike Wittman, 2016/08/12 22:51:35]

No need to repeat the comment in the implementation.

[rbpotter, 2016/08/15 18:03:46]

Done.

+// bounds independent of its modal parent.
+const char kHasIndependentBoundsKey[] = "__INDEPENDENT_BOUNDS__";
 
 // Transient child's modal parent.
 extern const aura::WindowProperty<aura::Window*>* const kModalParentKey;
 DEFINE_WINDOW_PROPERTY_KEY(aura::Window*, kModalParentKey, NULL);
 
 namespace {
 
 bool HasAncestor(aura::Window* window, aura::Window* ancestor) {
   if (!window)
     return false;
@@ skipping 86 matching lines @@
 
 void WindowModalityController::OnKeyEvent(ui::KeyEvent* event) {
   aura::Window* target = static_cast<aura::Window*>(event->target());
   if (GetModalTransient(target))
     event->SetHandled();
 }
 
 void WindowModalityController::OnMouseEvent(ui::MouseEvent* event) {
   aura::Window* target = static_cast<aura::Window*>(event->target());
   if (ProcessLocatedEvent(target, event))
-   event->SetHandled();
+    event->SetHandled();
 }
 
 void WindowModalityController::OnTouchEvent(ui::TouchEvent* event) {
   aura::Window* target = static_cast<aura::Window*>(event->target());
   if (ProcessLocatedEvent(target, event))
     event->SetHandled();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // WindowModalityController, aura::EnvObserver implementation:
@@ skipping 65 matching lines @@
     }
 
     AnimateWindow(modal_transient_child, WINDOW_ANIMATION_TYPE_BOUNCE);
   }
   if (event->type() == ui::ET_TOUCH_CANCELLED)
     return false;
   return !!modal_transient_child;
 }
 
 }  // namespace wm