Use DPI from Print Preview on Windows, handle non square

printing/print_job_constants.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_job_constants.h"
 
 #include "printing/features/features.h"
 
 namespace printing {
 
@@ skipping 38 matching lines @@
 
 // Number of copies.
 const char kSettingCopies[] = "copies";
 
 // Device name: Unique printer identifier.
 const char kSettingDeviceName[] = "deviceName";
 
 // Option to disable scaling. True if scaling is disabled else false.
 const char kSettingDisableScaling[] = "disableScaling";
 
+// Horizontal DPI
+const char kSettingDpiHorizontal[] = "dpiHorizontal";
+
+// Vertical DPI
+const char kSettingDpiVertical[] = "dpiVertical";
+
 // Scaling value required to fit the document to page.
 const char kSettingFitToPageScaling[] = "fitToPageScaling";
 
 // Print job duplex mode.
 const char kSettingDuplexMode[] = "duplex";
 
 // Option to fit source page contents to printer paper size: true if
 // selected else false.
 const char kSettingFitToPageEnabled[] = "fitToPageEnabled";
 
@@ skipping 141 matching lines @@
 const char kMono[] = "Mono";
 const char kMonochrome[] = "Monochrome";
 const char kNormal[] = "Normal";
 const char kNormalGray[] = "Normal.Gray";
 const char kRGB[] = "RGB";
 const char kRGBA[] = "RGBA";
 const char kRGB16[] = "RGB16";
 #endif
 
 }  // namespace printing