Switch PrintViewManager, PrintPreviewMessageHandler to use WebContentsUserData.

chrome/browser/ui/blocked_content/blocked_content_tab_helper.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 "chrome/browser/ui/blocked_content/blocked_content_tab_helper.h"
 
 #include "base/auto_reset.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 40 matching lines @@
 void BlockedContentTabHelper::PopupNotificationVisibilityChanged(
     bool visible) {
   if (!tab_contents_->in_destructor())
     tab_contents_->content_settings()->SetPopupsBlocked(visible);
 }
 
 void BlockedContentTabHelper::SendNotification(TabContents* contents,
                                                bool blocked_state) {
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_CONTENT_BLOCKED_STATE_CHANGED,
-      content::Source<TabContents>(contents),
+      content::Source<content::WebContents>(contents->web_contents()),
       content::Details<const bool>(&blocked_state));
 }
 
 void BlockedContentTabHelper::SetAllContentsBlocked(bool value) {
   if (all_contents_blocked_ == value)
     return;
 
   all_contents_blocked_ = value;
   if (!all_contents_blocked_ && blocked_contents_->GetBlockedContentsCount()) {
     std::vector<TabContents*> blocked;
@@ skipping 70 matching lines @@
 }
 
 size_t BlockedContentTabHelper::GetBlockedContentsCount() const {
   return blocked_contents_->GetBlockedContentsCount();
 }
 
 void BlockedContentTabHelper::GetBlockedContents(
     std::vector<TabContents*>* blocked_contents) const {
   blocked_contents_->GetBlockedContents(blocked_contents);
 }