Async frame preparation for Preview with support if selection.

chrome/renderer/printing/print_web_view_helper_linux.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/renderer/printing/print_web_view_helper.h"
 
 #include "base/file_descriptor_posix.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram.h"
@@ skipping 25 matching lines @@
   scoped_ptr<Metafile> draft_metafile;
   Metafile* initial_render_metafile = print_preview_context_.metafile();
   if (print_preview_context_.IsModifiable() && is_print_ready_metafile_sent_) {
     draft_metafile.reset(new PreviewMetafile);
     initial_render_metafile = draft_metafile.get();
   }
 
   base::TimeTicks begin_time = base::TimeTicks::Now();
   PrintPageInternal(page_params,
                     print_preview_context_.GetPrintCanvasSize(),
-                    print_preview_context_.frame(), initial_render_metafile);
+                    print_preview_context_.prepared_frame(),
+                    initial_render_metafile);
   print_preview_context_.RenderedPreviewPage(
       base::TimeTicks::Now() - begin_time);
   if (draft_metafile.get()) {
     draft_metafile->FinishDocument();
   } else if (print_preview_context_.IsModifiable() &&
              print_preview_context_.generate_draft_pages()) {
     DCHECK(!draft_metafile.get());
     draft_metafile.reset(
         print_preview_context_.metafile()->GetMetafileForCurrentPage());
   }
@@ skipping 127 matching lines @@
   }
   RenderPageContent(frame, params.page_number, canvas_area, content_area,
                     scale_factor, canvas.get());
 
   // Done printing. Close the device context to retrieve the compiled metafile.
   if (!metafile->FinishPage())
     NOTREACHED() << "metafile failed";
 }
 
 }  // namespace printing