Adds yet more debugging in hopes of tracking 91396. The latest data

views/widget/widget.cc

 // Copyright (c) 2011 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 "views/widget/widget.h"
 
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "ui/base/l10n/l10n_font_util.h"
@@ skipping 135 matching lines @@
       dragged_view_(NULL),
       event_stack_(),
       ownership_(InitParams::NATIVE_WIDGET_OWNS_WIDGET),
       is_secondary_widget_(true),
       frame_type_(FRAME_TYPE_DEFAULT),
       disable_inactive_rendering_(false),
       widget_closed_(false),
       saved_maximized_state_(false),
       minimum_size_(100, 100),
       focus_on_creation_(true),
-      is_top_level_(false) {
+      is_top_level_(false),
+      destroy_state_(DESTROY_STATE_NONE) {
 }
 
 Widget::~Widget() {
+  destroy_state_ = DESTROY_STATE_DELETED;
+
   while (!event_stack_.empty()) {
     event_stack_.top()->reset();
     event_stack_.pop();
   }
 
   DestroyRootView();
   if (ownership_ == InitParams::WIDGET_OWNS_NATIVE_WIDGET)
     delete native_widget_;
 }
 
@@ skipping 679 matching lines @@
       widget_delegate_->GetAccessibleWindowRole());
   native_widget_->SetAccessibleState(
       widget_delegate_->GetAccessibleWindowState());
 
   if (widget_delegate_->IsModal())
     native_widget_->BecomeModal();
 }
 
 void Widget::OnNativeWidgetDestroying() {
   FOR_EACH_OBSERVER(Observer, observers_, OnWidgetClosing(this));
+  if (destroy_state_ == DESTROY_STATE_NONE)
+    destroy_state_ = DESTROY_STATE_IN_DESTROYING;
   if (non_client_view_)
     non_client_view_->WindowClosing();
   widget_delegate_->WindowClosing();
 }
 
 void Widget::OnNativeWidgetDestroyed() {
+  if (destroy_state_ == DESTROY_STATE_IN_DESTROYING ||
+      destroy_state_ == DESTROY_STATE_NONE)
+    destroy_state_ = DESTROY_STATE_DESTROYED;
   widget_delegate_->DeleteDelegate();
   widget_delegate_ = NULL;
 }
 
 gfx::Size Widget::GetMinimumSize() {
   return non_client_view_ ? non_client_view_->GetMinimumSize() : gfx::Size();
 }
 
 void Widget::OnNativeWidgetSizeChanged(const gfx::Size& new_size) {
   root_view_->SetSize(new_size);
@@ skipping 247 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // internal::NativeWidgetPrivate, NativeWidget implementation:
 
 internal::NativeWidgetPrivate* NativeWidgetPrivate::AsNativeWidgetPrivate() {
   return this;
 }
 
 }  // namespace internal
 }  // namespace views