views: implement width snapping for DialogDelegateViews

chrome/browser/ui/views/payments/payment_request_dialog_view.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 "chrome/browser/ui/views/payments/payment_request_dialog_view.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
@@ skipping 183 matching lines @@
 void PaymentRequestDialogView::ShowInitialPaymentSheet() {
   view_stack_.Push(CreateViewAndInstallController(
                        base::MakeUnique<PaymentSheetViewController>(
                            request_->spec(), request_->state(), this),
                        &controller_map_),
                    /* animate = */ false);
   if (observer_for_testing_)
     observer_for_testing_->OnDialogOpened();
 }
 
-gfx::Size PaymentRequestDialogView::GetPreferredSize() const {
+gfx::Size PaymentRequestDialogView::GetUnsnappedPreferredSize() const {
   return gfx::Size(450, 450);

[Peter Kasting, 2017/03/30 00:35:35]

Another case that needs a bug filed

 }
 
 void PaymentRequestDialogView::ViewHierarchyChanged(
     const ViewHierarchyChangedDetails& details) {
   if (being_closed_)
     return;
 
   // When a view that is associated with a controller is removed from this
   // view's descendants, dispose of the controller.
   if (!details.is_add &&
       controller_map_.find(details.child) != controller_map_.end()) {
     DCHECK(!details.move_view);
     controller_map_.erase(details.child);
   }
 }
 
 }  // namespace payments