Print Preview: Make print preview tab modal.

chrome/browser/ui/constrained_window_tab_helper.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 "chrome/browser/ui/constrained_window_tab_helper.h"
 
 #include "chrome/browser/ui/constrained_window.h"
 #include "chrome/browser/ui/constrained_window_tab_helper_delegate.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper_delegate.h"
@@ skipping 65 matching lines @@
   RenderWidgetHostView* rwhv = contents->GetRenderWidgetHostView();
   // 70% opaque grey.
   SkColor greyish = SkColorSetARGB(178, 0, 0, 0);
   if (rwhv)
     rwhv->SetVisuallyDeemphasized(blocked ? &greyish : NULL, false);
   // RenderViewHost may be NULL during shutdown.
   if (contents->render_view_host())
     contents->render_view_host()->set_ignore_input_events(blocked);
   if (delegate_)
     delegate_->SetTabContentBlocked(wrapper_, blocked);
+
+  if (!contents->is_being_destroyed() && contents->delegate()) {
+    // Force the printing state to update.
+    contents->SetContentRestrictions(contents->content_restrictions());
+  }
 }
 
 void ConstrainedWindowTabHelper::DidNavigateMainFramePostCommit(
     const content::LoadCommittedDetails& details,
     const ViewHostMsg_FrameNavigate_Params& params) {
   // Close constrained windows if necessary.
   if (!net::RegistryControlledDomainService::SameDomainOrHost(
           details.previous_url, details.entry->url()))
     CloseConstrainedWindows();
 }
 
 void ConstrainedWindowTabHelper::DidGetIgnoredUIEvent() {
   if (constrained_window_count()) {
     ConstrainedWindow* window = *constrained_window_begin();
     window->FocusConstrainedWindow();
   }
 }
 
 void ConstrainedWindowTabHelper::TabContentsDestroyed(TabContents* tab) {
   // First cleanly close all child windows.
   // TODO(mpcomplete): handle case if MaybeCloseChildWindows() already asked
   // some of these to close.  CloseWindows is async, so it might get called
   // twice before it runs.
   CloseConstrainedWindows();
 }