Cleanup code in printing/

printing/print_settings_initializer_mac.cc

 // Copyright (c) 2011 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_initializer_mac.h"
 
 #include "base/strings/sys_string_conversions.h"
 #include "printing/print_settings.h"
 #include "printing/units.h"
 
@@ skipping 10 matching lines @@
   PMOrientation orientation = kPMPortrait;
   PMGetOrientation(page_format, &orientation);
   print_settings->SetOrientation(orientation == kPMLandscape);
 
   UInt32 resolution_count = 0;
   PMResolution best_resolution = { 72.0, 72.0 };
   OSStatus status = PMPrinterGetPrinterResolutionCount(printer,
                                                        &resolution_count);
   if (status == noErr) {
     // Resolution indexes are 1-based.
-    for (uint32 i = 1; i <= resolution_count; ++i) {
+    for (uint32_t i = 1; i <= resolution_count; ++i) {
       PMResolution resolution;
       PMPrinterGetIndexedPrinterResolution(printer, i, &resolution);
       if (resolution.hRes > best_resolution.hRes)
         best_resolution = resolution;
     }
   }
   int dpi = best_resolution.hRes;
   print_settings->set_dpi(dpi);
 
   DCHECK_EQ(dpi, best_resolution.vRes);
@@ skipping 13 matching lines @@
       (page_rect.right - page_rect.left),
       (page_rect.bottom - page_rect.top));
 
   DCHECK_EQ(print_settings->device_units_per_inch(), kPointsPerInch);
   print_settings->SetPrinterPrintableArea(physical_size_device_units,
                                           printable_area_device_units,
                                           false);
 }
 
 }  // namespace printing