Use DPI from Print Preview on Windows, handle non square

printing/print_settings.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 "printing/print_settings.h"
 
 #include "base/atomic_sequence_num.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "printing/print_job_constants.h"
@@ skipping 141 matching lines @@
   Clear();
 }
 
 PrintSettings::PrintSettings(const PrintSettings& other) = default;
 
 PrintSettings::~PrintSettings() {
 }
 
 void PrintSettings::Clear() {
   ranges_.clear();
-  desired_dpi_ = 72;
+#if defined(OS_WIN)
+  desired_dpi_[0] = 0;
+  desired_dpi_[1] = 0;
+#else
+  desired_dpi_[0] = 72;
+  desired_dpi_[1] = 72;
+#endif
   selection_only_ = false;
   margin_type_ = DEFAULT_MARGINS;
   title_.clear();
   url_.clear();
   display_header_footer_ = false;
   should_print_backgrounds_ = false;
   collate_ = false;
   color_ = UNKNOWN_COLOR_MODEL;
   copies_ = 0;
   duplex_mode_ = UNKNOWN_DUPLEX_MODE;
@@ skipping 115 matching lines @@
 }
 
 void PrintSettings::SetOrientation(bool landscape) {
   if (landscape_ != landscape) {
     landscape_ = landscape;
     page_setup_device_units_.FlipOrientation();
   }
 }
 
 }  // namespace printing