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

chrome/browser/renderer_host/render_view_host.h

 // Copyright (c) 2009 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.
 
 #ifndef CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 163 matching lines @@
   int GetPendingRequestId();
 
   // Called by ResourceDispatcherHost when a response for a pending cross-site
   // request is received.  The ResourceDispatcherHost will pause the response
   // until the onunload handler of the previous renderer is run.
   void OnCrossSiteResponse(int new_render_process_host_id, int new_request_id);
 
   // Stops the current load.
   void Stop();
 
-
   // Asks the renderer to "render" printed pages and initiate printing on our
   // behalf.
   bool PrintPages();
 
+  // Notify renderer of success/failure of print job.
+  void PrintingDone(int document_cookie, bool success);
+
   // Start looking for a string within the content of the page, with the
   // specified options.
   void StartFinding(int request_id,
                     const string16& search_string,
                     bool forward,
                     bool match_case,
                     bool find_next);
 
   // Cancel a pending find operation. If |clear_selection| is true, it will also
   // clear the selection on the focused frame.
@@ skipping 440 matching lines @@
   // not an extension.
   scoped_ptr<ExtensionFunctionDispatcher> extension_function_dispatcher_;
 
   // True if the render view can be shut down suddenly.
   bool sudden_termination_allowed_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewHost);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_