[Chrome] Support NumCopies print preset

ppapi/thunk/ppb_printing_dev_thunk.cc

Index: ppapi/thunk/ppb_printing_dev_thunk.cc
diff --git a/ppapi/thunk/ppb_printing_dev_thunk.cc b/ppapi/thunk/ppb_printing_dev_thunk.cc
index 96f52f5832cd9c7608725593a1bbc36ccbac74d0..084b75b26f201eead510dde48956fb6d08f2b76e 100644
--- a/ppapi/thunk/ppb_printing_dev_thunk.cc
+++ b/ppapi/thunk/ppb_printing_dev_thunk.cc
@@ -37,11 +37,27 @@ int32_t GetDefaultPrintSettings(PP_Resource resource,
       enter.callback()));
 }
 
+void SetPrintPresetOptionsFromDocument(
+    PP_Resource resource,
+    PP_PrintPresetOptions_Dev* print_options) {
+  VLOG(4) << "PPB_Printing_Dev::SetPrintPresetOptionsFromDocument()";
+  EnterResource<PPB_Printing_API> enter(resource, true);
+  if (enter.failed())
+    return;
+  enter.object()->SetPrintPresetOptionsFromDocument(print_options);
+}
+
 const PPB_Printing_Dev_0_7 g_ppb_printing_dev_thunk_0_7 = {
   &Create,
   &GetDefaultPrintSettings
 };
 
+const PPB_Printing_Dev_0_8 g_ppb_printing_dev_thunk_0_8 = {
+  &Create,
+  &GetDefaultPrintSettings,
+  &SetPrintPresetOptionsFromDocument
+};
+
 }  // namespace
 
 PPAPI_THUNK_EXPORT const PPB_Printing_Dev_0_7*
@@ -49,5 +65,10 @@ PPAPI_THUNK_EXPORT const PPB_Printing_Dev_0_7*
   return &g_ppb_printing_dev_thunk_0_7;
 }
 
+PPAPI_THUNK_EXPORT const PPB_Printing_Dev_0_8*
+    GetPPB_Printing_Dev_0_8_Thunk() {
+  return &g_ppb_printing_dev_thunk_0_8;
+}
+
 }  // namespace thunk
 }  // namespace ppapi