[Print Preview] Modified PP_PrintSettings_Dev interface to support auto fit to page functionality.

chrome/renderer/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/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 43 matching lines @@
   }
   return PreviewPageRendered(page_number, draft_metafile.get());
 }
 
 bool PrintWebViewHelper::PrintPages(WebFrame* frame, const WebNode& node) {
   printing::NativeMetafile metafile;
   if (!metafile.Init())
     return false;
 
   const PrintMsg_PrintPages_Params& params = *print_pages_params_;
-  PrepareFrameAndViewForPrint prep_frame_view(params.params, frame, node);
+  PrepareFrameAndViewForPrint prep_frame_view(params.params, frame, node,
+                                              print_for_preview_);
   int page_count = 0;
   if (!RenderPages(params, frame, node, &page_count, &prep_frame_view,
                    &metafile)) {
     return false;
   }
 
   // Get the size of the resulting metafile.
   uint32 buf_size = metafile.GetDataSize();
   DCHECK_GT(buf_size, 0u);
 
@@ skipping 133 matching lines @@
     PrintHeaderAndFooter(canvas.get(), params.page_number + 1,
                          print_preview_context_.total_page_count(),
                          scale_factor, page_layout_in_points,
                          *header_footer_info_);
   }
 
   // Done printing. Close the device context to retrieve the compiled metafile.
   if (!metafile->FinishPage())
     NOTREACHED() << "metafile failed";
 }