[Chrome] Support NumCopies print preset

pdf/instance.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 "pdf/instance.h"
 
 #include <algorithm>  // for min()
 #define _USE_MATH_DEFINES  // for M_PI
 #include <cmath>      // for log() and pow()
 #include <math.h>
@@ skipping 1368 matching lines @@
 }
 
 void Instance::OnPrint(int32_t) {
   pp::PDF::Print(this);
 }
 
 void Instance::SaveAs() {
   pp::PDF::SaveAs(this);
 }
 
+void Instance::SetPrintPresetOptionsFromDocument() {
+  PP_PrintPresetOptions_Dev print_options;
+  print_options.is_scaling_disabled = PP_FromBool(IsPrintScalingDisabled());
+  print_options.copies = engine_->GetCopiesToPrint();
+
+  pp::Printing_Dev::SetPrintPresetOptionsFromDocument(print_options);
+}
+
 void Instance::SubmitForm(const std::string& url,
                           const void* data,
                           int length) {
   pp::URLRequestInfo request(this);
   request.SetURL(url);
   request.SetMethod("POST");
   request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
 
   pp::CompletionCallback callback =
       form_factory_.NewCallback(&Instance::FormDidOpen);
@@ skipping 108 matching lines @@
 
   if (on_load_callback_.is_string())
     ExecuteScript(on_load_callback_);
   // Note: If we are in print preview mode on_load_callback_ might call
   // ScrollTo{X|Y}() and we don't want to scroll again and override it.
   // #page=N is not supported in Print Preview.
   if (!IsPrintPreview()) {
     int initial_page = GetInitialPage(url_);
     if (initial_page >= 0)
       ScrollToPage(initial_page);
+  } else {
+    // Set print preset options from pdf document.
+    SetPrintPresetOptionsFromDocument();
   }
 
   if (!full_)
     return;
   if (!pp::PDF::IsAvailable())
     return;
 
   int content_restrictions =
       CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
   if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
@@ skipping 1199 matching lines @@
   return instance_->HasScriptableMethod(name, exception);
 }
 
 pp::Var PDFScriptableObject::Call(const pp::Var& method,
                                   const std::vector<pp::Var>& args,
                                   pp::Var* exception) {
   return instance_->CallScriptableMethod(method, args, exception);
 }
 
 }  // namespace chrome_pdf