Add Print Preview UI to accept and reject printer sharing invitations.

chrome/browser/resources/print_preview/data/destination_store.js

Index: chrome/browser/resources/print_preview/data/destination_store.js
diff --git a/chrome/browser/resources/print_preview/data/destination_store.js b/chrome/browser/resources/print_preview/data/destination_store.js
index 10124417a84b9d2e9776bc87b3ef70b557f8da28..0a9cf280c0e96735ef5d01b35054528c963c21de 100644
--- a/chrome/browser/resources/print_preview/data/destination_store.js
+++ b/chrome/browser/resources/print_preview/data/destination_store.js
@@ -364,6 +364,10 @@ cr.define('print_preview', function() {
           this.cloudPrintInterface_,
           cloudprint.CloudPrintInterface.EventType.PRINTER_FAILED,
           this.onCloudPrintPrinterFailed_.bind(this));
+      this.tracker_.add(
+          this.cloudPrintInterface_,
+          cloudprint.CloudPrintInterface.EventType.PROCESS_INVITE_DONE,
+          this.onCloudPrintProcessInviteDone_.bind(this));
     },
 
     /**
@@ -511,6 +515,13 @@ cr.define('print_preview', function() {
       }
     },
 
+    /** Initiates loading of all known destination types. */
+    startLoadAllDestinations: function() {
+      this.startLoadCloudDestinations();
+      this.startLoadLocalDestinations();
+      this.startLoadPrivetDestinations();
+    },
+
     /**
      * Wait for a privet device to be registered.
      */
@@ -836,6 +847,20 @@ cr.define('print_preview', function() {
     },
 
     /**
+     * Called when printer sharing invitation was processed successfully.
+     * @param {Event} event Contains detailed information about the invite and
+     *     newly accepted destination (if known).
+     * @private
+     */
+    onCloudPrintProcessInviteDone_: function(event) {
+      if (event.accept && event.printer) {
+        // Hint the destination list to promote this new destination.
+        event.printer.isRecent = true;

[Vitaly Buka (NO REVIEWS), 2014/09/22 01:25:15]

Please add metricts somewhere to count accepts and rejects.
Use separate CL

+        this.insertDestination_(event.printer);
+      }
+    },
+
+    /**
      * Called when a Privet printer is added to the local network.
      * @param {object} event Contains information about the added printer.
      * @private
@@ -875,9 +900,7 @@ cr.define('print_preview', function() {
       this.reset_();
       this.isInAutoSelectMode_ = true;
       this.createLocalPdfPrintDestination_();
-      this.startLoadLocalDestinations();
-      this.startLoadCloudDestinations();
-      this.startLoadPrivetDestinations();
+      this.startLoadAllDestinations();
     },
 
     // TODO(vitalybuka): Remove three next functions replacing Destination.id