Switch PrintViewManager, PrintPreviewMessageHandler to use WebContentsUserData.

chrome/browser/automation/automation_provider_win.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/automation/automation_provider.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/debug/trace_event.h"
 #include "base/json/json_reader.h"
@@ skipping 241 matching lines @@
     external_tab->FocusThroughTabTraversal(reverse, restore_focus_to_view);
   }
   // This message expects no response.
 }
 
 void AutomationProvider::PrintAsync(int tab_handle) {
   WebContents* web_contents = GetWebContentsForHandle(tab_handle, NULL);
   if (!web_contents)
     return;
 
-  TabContents* tab_contents = TabContents::FromWebContents(web_contents);
-  tab_contents->print_view_manager()->PrintNow();
+  printing::PrintViewManager* print_view_manager =
+      printing::PrintViewManager::FromWebContents(web_contents);
+  print_view_manager->PrintNow();
 }
 
 ExternalTabContainer* AutomationProvider::GetExternalTabForHandle(int handle) {
   if (tab_tracker_->ContainsHandle(handle)) {
     NavigationController* tab = tab_tracker_->GetResource(handle);
     return ExternalTabContainer::GetContainerForTab(
         tab->GetWebContents()->GetNativeView());
   }
 
   return NULL;
@@ skipping 146 matching lines @@
 void AutomationProvider::OnSetZoomLevel(int handle, int zoom_level) {
   if (tab_tracker_->ContainsHandle(handle)) {
     NavigationController* tab = tab_tracker_->GetResource(handle);
     if (tab->GetWebContents() && tab->GetWebContents()->GetRenderViewHost()) {
       RenderViewHost* host = tab->GetWebContents()->GetRenderViewHost();
       content::PageZoom zoom = static_cast<content::PageZoom>(zoom_level);
       host->Zoom(zoom);
     }
   }
 }