Add Print Selection support to Chrome. This change is fairly involved since ...

chrome/browser/tab_contents/tab_contents.h

Index: chrome/browser/tab_contents/tab_contents.h
===================================================================
--- chrome/browser/tab_contents/tab_contents.h	(revision 18804)
+++ chrome/browser/tab_contents/tab_contents.h	(working copy)
@@ -524,6 +524,9 @@
   // this function. Returns false if printing is impossible at the moment.
   bool PrintNow();
 
+  // Notify the completion of a printing job.
+  void PrintingDone(int document_cookie, bool success);
+
   // Returns true if the active NavigationEntry's page_id equals page_id.
   bool IsActiveEntry(int32 page_id);