MacViews: Remove constrained window dependencies for certificate viewer.

chrome/browser/ui/cocoa/certificate_viewer_mac_views.mm

+// 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.
+
+#import "chrome/browser/ui/cocoa/certificate_viewer_mac_views.h"
+
+#include "chrome/browser/certificate_viewer.h"
+#include "components/constrained_window/constrained_window_views.h"
+#include "components/web_modal/web_contents_modal_dialog_manager.h"
+#include "ui/views/widget/widget.h"
+#include "ui/views/widget/widget_delegate.h"
+
+// A fully transparent, borderless web-modal dialog used to display the
+// OS-provided window-modal sheet that displays certificate information.
+class CertificateAnchorWidgetDelegate : public views::WidgetDelegateView {
+ public:
+  CertificateAnchorWidgetDelegate() {}
+
+  // WidgetDelegate:
+  ui::ModalType GetModalType() const override { return ui::MODAL_TYPE_CHILD; }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(CertificateAnchorWidgetDelegate);
+};
+
+@implementation SSLCertificateViewerViewsMac
+
+- (void)sheetDidEnd:(NSWindow*)parent
+         returnCode:(NSInteger)returnCode
+            context:(void*)context {
+  [self closeSheetWithAnimation:YES];
+  overlayWindow_->Close();
+}
+
+- (void)displayForWebContents:(content::WebContents*)webContents {
+  [super displayForWebContents:webContents];
+
+  views::WidgetDelegateView* delegate_ = new CertificateAnchorWidgetDelegate();
+  overlayWindow_.reset(constrained_window::ShowParentedWebModalDialogViews(
+      delegate_, webContents));
+  [self showSheetForWindow:overlayWindow_->GetNativeWindow()];
+}
+
+@end
+
+void ShowCertificateViewer(content::WebContents* web_contents,
+                           gfx::NativeWindow parent,
+                           net::X509Certificate* cert) {
+  SSLCertificateViewerViewsMac* viewer =
+      [[SSLCertificateViewerViewsMac alloc] initWithCertificate:cert];
+  [viewer displayForWebContents:web_contents];
+}