Add a "Simplify Page" option to the print preview dialog

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 d9289ffc33c028a4c40d6d1d446d10871dcc0759..2d68f6c9024cf8ec0f331940e5f8b889d5b8bd46 100644
--- a/chrome/browser/resources/print_preview/native_layer.js
+++ b/chrome/browser/resources/print_preview/native_layer.js
@@ -67,6 +67,8 @@ cr.define('print_preview', function() {
         this.onEnableManipulateSettingsForTest_.bind(this);
     global.printPresetOptionsFromDocument =
         this.onPrintPresetOptionsFromDocument_.bind(this);
+   global.onDetectedSimplifiablePage =

[Vitaly Buka (NO REVIEWS), 2015/07/13 07:00:30]

DetectDistillablePage

[arjunpatel, 2015/07/21 17:25:00]

Acknowledged.

+        this.onDetectedSimplifiablePage_.bind(this);
     global.onProvisionalPrinterResolved =
         this.onProvisionalDestinationResolved_.bind(this);
     global.failedToResolveProvisionalPrinter =
@@ -80,6 +82,7 @@ cr.define('print_preview', function() {
    */
   NativeLayer.EventType = {
     ACCESS_TOKEN_READY: 'print_preview.NativeLayer.ACCESS_TOKEN_READY',
+    ALLOW_PRINT_FRIENDLY: 'print_preview.NativeLayer.ALLOW_PRINT_FRIENDLY',
     CAPABILITIES_SET: 'print_preview.NativeLayer.CAPABILITIES_SET',
     CLOUD_PRINT_ENABLE: 'print_preview.NativeLayer.CLOUD_PRINT_ENABLE',
     DESTINATIONS_RELOAD: 'print_preview.NativeLayer.DESTINATIONS_RELOAD',
@@ -273,6 +276,7 @@ cr.define('print_preview', function() {
         'landscape': printTicketStore.landscape.getValue(),
         'color': this.getNativeColorModel_(destination, printTicketStore.color),
         'headerFooterEnabled': printTicketStore.headerFooter.getValue(),
+        'printFriendly': printTicketStore.printFriendly.getValue(),
         'marginsType': printTicketStore.marginsType.getValue(),
         'isFirstRequest': requestId == 0,
         'requestID': requestId,
@@ -736,6 +740,19 @@ cr.define('print_preview', function() {
     },
 
     /**
+      * Updates the interface to show the "Print friendly" option
+      * when PrintPreviewHandler::HandleIsPageDistillableResult
+      * determines that this page can be simplified with the
+      * DOM Distiller.
+      * @private
+      */
+     onDetectedSimplifiablePage_: function() {
+       var allowPrintFriendlyEvent = new Event(
+           NativeLayer.EventType.ALLOW_PRINT_FRIENDLY);
+       this.dispatchEvent(allowPrintFriendlyEvent);
+     },
+
+    /**
      * Simulates a user click on the print preview dialog cancel button. Used
      * only for testing.
      * @private