Print Preview: Store preview data in the print preview handler....

chrome/browser/tab_contents/tab_contents.h

Index: chrome/browser/tab_contents/tab_contents.h
===================================================================
--- chrome/browser/tab_contents/tab_contents.h	(revision 72691)
+++ chrome/browser/tab_contents/tab_contents.h	(working copy)
@@ -52,6 +52,7 @@
 }
 
 namespace printing {
+class PrintPreviewMessageHandler;
 class PrintViewManager;
 }
 
@@ -1109,9 +1110,12 @@
   // Registers and unregisters for pref notifications.
   PrefChangeRegistrar pref_change_registrar_;
 
-  // Handles print preview and print job for this contents.
+  // Handles print job for this contents.
   scoped_ptr<printing::PrintViewManager> printing_;
 
+  // Handles print preview for this contents.
+  scoped_ptr<printing::PrintPreviewMessageHandler> print_preview_;
+
   // SavePackage, lazily created.
   scoped_refptr<SavePackage> save_package_;