Add IsScalingDisabled and PP_PRINTOUTPUTFORMAT_EMF to pepper printing interface.

ppapi/native_client/src/trusted/plugin/plugin.cc

 // Copyright (c) 2011 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.
 
 #ifdef _MSC_VER
 // Do not warn about use of std::copy with raw pointers.
 #pragma warning(disable : 4996)
 #endif
 
 #include "native_client/src/trusted/plugin/plugin.h"
@@ skipping 325 matching lines @@
         proxy->GetPluginInterface(PPP_PRINTING_DEV_INTERFACE));
   }
 
   uint32_t QuerySupportedPrintOutputFormats() {
     if (ppp_printing_ != NULL) {
       return ppp_printing_->QuerySupportedFormats(plugin_->pp_instance());
     }
     return 0;
   }
 
+  bool IsPrintScalingDisabled() {
+    if (ppp_printing_ != NULL) {
+      return ppp_printing_->IsScalingDisabled(plugin_->pp_instance());
+    }
+    return false;
+  }
+
   int32_t PrintBegin(const PP_PrintSettings_Dev& print_settings) {
     if (ppp_printing_ != NULL) {
       return ppp_printing_->Begin(plugin_->pp_instance(), &print_settings);
     }
     return 0;
   }
 
   pp::Resource PrintPages(const PP_PrintPageNumberRange_Dev* page_ranges,
                           uint32_t page_range_count) {
     if (ppp_printing_ != NULL) {
@@ skipping 1605 matching lines @@
   std::string scheme = canonicalized.AsString().substr(comps.scheme.begin,
                                                        comps.scheme.len);
   if (scheme == kChromeExtensionUriScheme)
     return SCHEME_CHROME_EXTENSION;
   if (scheme == kDataUriScheme)
     return SCHEME_DATA;
   return SCHEME_OTHER;
 }
 
 }  // namespace plugin