[JS Changes] Support NumCopies print preset

chrome/browser/resources/print_preview/native_layer.js

Index: chrome/browser/resources/print_preview/native_layer.js
diff --git a/chrome/browser/resources/print_preview/native_layer.js b/chrome/browser/resources/print_preview/native_layer.js
index ca7ff32c84fe2e115cbd8bd8a417a0213812dacd..db1cfc0dd640090056673b544c02b4abc59ac3b3 100644
--- a/chrome/browser/resources/print_preview/native_layer.js
+++ b/chrome/browser/resources/print_preview/native_layer.js
@@ -61,6 +61,8 @@ cr.define('print_preview', function() {
     global.onPrivetPrintFailed = this.onPrivetPrintFailed_.bind(this);
     global.onEnableManipulateSettingsForTest =
         this.onEnableManipulateSettingsForTest_.bind(this);
+    global.printPresetOptionsFromDocument =
+        this.onPrintPresetOptionsFromDocument_.bind(this);
   };
 
   /**
@@ -95,6 +97,7 @@ cr.define('print_preview', function() {
     PRIVET_CAPABILITIES_SET:
         'print_preview.NativeLayer.PRIVET_CAPABILITIES_SET',
     PRIVET_PRINT_FAILED: 'print_preview.NativeLayer.PRIVET_PRINT_FAILED',
+    PRINT_PRESET_OPTIONS: 'print_preview.NativeLayer.PRINT_PRESET_OPTIONS',
   };
 
   /**
@@ -664,6 +667,20 @@ cr.define('print_preview', function() {
     },
 
     /**
+     * Update print preset options from source PDF document.
+     * Called from PrintPreviewUI::OnSetOptionsFromDocument().
+     * @param {object} options Print preset options as mentioned in source
+     * document.
+     * @private
+     */
+    onPrintPresetOptionsFromDocument_: function(options) {
+      var printPresetOptionsEvent = new Event(
+          NativeLayer.EventType.PRINT_PRESET_OPTIONS);
+      printPresetOptionsEvent.optionsFromDocument = options;
+      this.dispatchEvent(printPresetOptionsEvent);
+    },
+
+    /**
      * Simulates a user click on the print preview dialog cancel button. Used
      * only for testing.
      * @private