[Chrome] Support NumCopies print preset

pdf/out_of_process_instance.cc

Index: pdf/out_of_process_instance.cc
diff --git a/pdf/out_of_process_instance.cc b/pdf/out_of_process_instance.cc
index d627dc2d7974f90a164714e0ddd0ad568cae8aa9..209f87a6638b22b18c05f49ea2d9fab4882c449c 100644
--- a/pdf/out_of_process_instance.cc
+++ b/pdf/out_of_process_instance.cc
@@ -165,9 +165,22 @@ void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
   }
 }
 
+PP_Bool GetPrintPresetOptionsFromDocument(
+    PP_Instance instance,
+    PP_PdfPrintPresetOptions_Dev* options) {
+  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
+  if (object) {
+    OutOfProcessInstance* obj_instance =
+        static_cast<OutOfProcessInstance*>(object);
+    obj_instance->GetPrintPresetOptionsFromDocument(options);
+  }
+  return PP_TRUE;
+}
+
 const PPP_Pdf ppp_private = {
   &GetLinkAtPosition,
-  &Transform
+  &Transform,
+  &GetPrintPresetOptionsFromDocument
 };
 
 int ExtractPrintPreviewPageIndex(const std::string& src_url) {
@@ -537,6 +550,12 @@ void OutOfProcessInstance::DidChangeView(const pp::View& view) {
   }
 }
 
+void OutOfProcessInstance::GetPrintPresetOptionsFromDocument(
+    PP_PdfPrintPresetOptions_Dev* options) {
+  options->is_scaling_disabled = PP_FromBool(IsPrintScalingDisabled());
+  options->copies = engine_->GetCopiesToPrint();
+}
+
 pp::Var OutOfProcessInstance::GetLinkAtPosition(
     const pp::Point& point) {
   pp::Point offset_point(point);