Attempt at fixing crash. It looks like the printing code can delete

chrome/browser/printing/print_view_manager.h

Index: chrome/browser/printing/print_view_manager.h
diff --git a/chrome/browser/printing/print_view_manager.h b/chrome/browser/printing/print_view_manager.h
index 3cad0f8a177f477c5b29f543fd3d2921e29c7a4c..f26061c909bdea66b01e26d9742b2cfcf41a32fd 100644
--- a/chrome/browser/printing/print_view_manager.h
+++ b/chrome/browser/printing/print_view_manager.h
@@ -14,7 +14,7 @@
 #include "printing/printed_pages_source.h"
 
 class RenderViewHost;
-class TabContents;
+class TabContentsWrapper;
 struct PrintHostMsg_DidPrintPage_Params;
 
 namespace printing {
@@ -29,7 +29,7 @@ class PrintViewManager : public NotificationObserver,
                          public PrintedPagesSource,
                          public TabContentsObserver {
  public:
-  explicit PrintViewManager(TabContents* tab_contents);
+  explicit PrintViewManager(TabContentsWrapper* tab);
   virtual ~PrintViewManager();
 
   // Override the title for this PrintViewManager's PrintJobs using the title
@@ -119,6 +119,9 @@ class PrintViewManager : public NotificationObserver,
   // print_job_ is initialized.
   bool OpportunisticallyCreatePrintJob(int cookie);
 
+  // TabContentsWrapper we're associated with.
+  TabContentsWrapper* tab_;
+
   NotificationRegistrar registrar_;
 
   // Manages the low-level talk to the printer.