Fix print settings units conversion for PPB_Printing.

content/browser/renderer_host/pepper/pepper_print_settings_manager.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 "content/browser/renderer_host/pepper/pepper_print_settings_manager.h"
 
 #include "content/public/browser/browser_thread.h"
 #include "ppapi/c/pp_errors.h"
 #include "printing/printing_context.h"
 #include "printing/units.h"
 
 namespace content {
 
 namespace {
 
 #if defined(ENABLE_PRINTING)
 // Print units conversion functions.
 int32_t DeviceUnitsInPoints(int32_t device_units,
                             int32_t device_units_per_inch) {
-  return printing::ConvertUnit(device_units, printing::kPointsPerInch,
-                               device_units_per_inch);
+  return printing::ConvertUnit(device_units, device_units_per_inch,
+                               printing::kPointsPerInch);
 }
 
 PP_Size PrintSizeToPPPrintSize(const gfx::Size& print_size,
                                int32_t device_units_per_inch) {
   PP_Size result;
   result.width = DeviceUnitsInPoints(print_size.width(), device_units_per_inch);
   result.height = DeviceUnitsInPoints(print_size.height(),
                                       device_units_per_inch);
   return result;
 }
@@ skipping 56 matching lines @@
 
 }  // namespace
 
 void PepperPrintSettingsManagerImpl::GetDefaultPrintSettings(
     PepperPrintSettingsManager::Callback callback) {
   BrowserThread::PostTaskAndReplyWithResult(BrowserThread::UI, FROM_HERE,
       base::Bind(ComputeDefaultPrintSettings), callback);
 }
 
 }  // namespace content