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

chrome/renderer/mock_printer.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/mock_printer.h"
 
 #include "base/basictypes.h"
 #include "base/file_util.h"
 #include "base/shared_memory.h"
 #include "base/string16.h"
@@ skipping 47 matching lines @@
     desired_dpi_(printing::kPointsPerInch),
     selection_only_(false),
     document_cookie_(-1),
     current_document_cookie_(0),
     printer_status_(PRINTER_READY),
     number_pages_(0),
     page_number_(0),
     is_first_request_(true),
     print_to_pdf_(false),
     preview_request_id_(0),
+    fit_pdf_page_to_paper_size_(true),
     display_header_footer_(false),
     date_(ASCIIToUTF16("date")),
     title_(ASCIIToUTF16("title")),
     url_(ASCIIToUTF16("url")),
     use_invalid_settings_(false) {
   page_size_.SetSize(static_cast<int>(8.5 * dpi_),
                      static_cast<int>(11.0 * dpi_));
   content_size_.SetSize(static_cast<int>((7.5 * dpi_)),
                           static_cast<int>((10.0 * dpi_)));
   margin_left_ = margin_top_ = static_cast<int>(0.5 * dpi_);
@@ skipping 67 matching lines @@
   settings->params.min_shrink = min_shrink_;
   settings->params.desired_dpi = desired_dpi_;
   settings->params.selection_only = selection_only_;
   settings->params.document_cookie = document_cookie_;
   settings->params.page_size = page_size_;
   settings->params.content_size = content_size_;
   settings->params.printable_area = printable_area_;
   settings->params.is_first_request = is_first_request_;
   settings->params.print_to_pdf = print_to_pdf_;
   settings->params.preview_request_id = preview_request_id_;
+  settings->params.fit_pdf_page_to_paper_size = fit_pdf_page_to_paper_size_;
   settings->params.display_header_footer = display_header_footer_;
   settings->params.date = date_;
   settings->params.title = title_;
   settings->params.url = url_;
   printer_status_ = PRINTER_PRINTING;
 }
 
 void MockPrinter::UpdateSettings(int cookie,
                                  PrintMsg_PrintPages_Params* params,
                                  const std::vector<int>& pages,
@@ skipping 133 matching lines @@
   params->selection_only = selection_only_;
   params->document_cookie = document_cookie_;
   params->page_size = page_size_;
   params->content_size = content_size_;
   params->printable_area = printable_area_;
   params->margin_left = margin_left_;
   params->margin_top = margin_top_;
   params->is_first_request = is_first_request_;
   params->print_to_pdf = print_to_pdf_;
   params->preview_request_id = preview_request_id_;
+  params->fit_pdf_page_to_paper_size = fit_pdf_page_to_paper_size_;
   params->display_header_footer = display_header_footer_;
   params->date = date_;
   params->title = title_;
   params->url = url_;
 }