Save most recent 3 destinations across multiple sessions

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 acbfae038781a9008a0fa7ad8cd361e356bff7fd..33d47c39ebedda4e051467559ceec2e1196a3fe7 100644
--- a/chrome/browser/resources/print_preview/data/destination_store.js
+++ b/chrome/browser/resources/print_preview/data/destination_store.js
@@ -433,7 +433,6 @@ cr.define('print_preview', function() {
       this.pdfPrinterEnabled_ = !isInAppKioskMode;
       this.systemDefaultDestinationId_ = systemDefaultDestinationId;
       this.createLocalPdfPrintDestination_();
-
       if (!this.appState_.selectedDestinationId ||
           !this.appState_.selectedDestinationOrigin) {
         var destinationMatch = this.convertToDestinationMatch_(
@@ -458,16 +457,47 @@ cr.define('print_preview', function() {
       var capabilities = null;
       var extensionId = '';
       var extensionName = '';
-      if (this.appState_.selectedDestinationId &&
-          this.appState_.selectedDestinationOrigin) {
-        origin = this.appState_.selectedDestinationOrigin;
-        id = this.appState_.selectedDestinationId;
-        account = this.appState_.selectedDestinationAccount || '';
-        name = this.appState_.selectedDestinationName || '';
-        capabilities = this.appState_.selectedDestinationCapabilities;
-        extensionId = this.appState_.selectedDestinationExtensionId || '';
-        extensionName = this.appState_.selectedDestinationExtensionName || '';
+      var foundDestination = false;
+      if (this.appState_.recentDestinationIds &&
+          this.appState_.recentDestinationOrigins) {
+        // Run through the destinations backwards the most recently used is set
+        // as the initially selected destination.
+        for (var i = this.appState_.recentDestinationIds.length - 1; i >= 0;
+             i--) {
+          if (this.appState_.recentDestinationIds[i] &&
+              this.appState_.recentDestinationOrigins[i]) {
+            origin = this.appState_.recentDestinationOrigins[i];
+            id = this.appState_.recentDestinationIds[i];
+            account = this.appState_.recentDestinationAccounts[i] || '';
+            name = this.appState_.recentDestinationNames[i] || '';
+            capabilities = this.appState_.recentDestinationCapabilities[i];
+            extensionId = this.appState_.recentDestinationExtensionIds[i] || '';
+            extensionName =
+                this.appState_.recentDestinationExtensionNames[i] || '';
+          }
+          var candidate =
+              this.destinationMap_[this.getDestinationKey_(origin,
+                                                           id, account)];
+          if (candidate != null) {
+            this.selectDestination(candidate);
+            candidate.isRecent = true;
+            foundDestination = true;
+          } else {
+            if (this.fetchPreselectedDestination_(
+              origin,
+              id,
+              account,
+              name,
+              capabilities,
+              extensionId,
+              extensionName)) {
+              foundDestination = true;
+            }
+          }
+        }
       }
+      if (foundDestination) return;
+      // Try the system default
       var candidate =
           this.destinationMap_[this.getDestinationKey_(origin, id, account)];
       if (candidate != null) {
@@ -1125,9 +1155,22 @@ cr.define('print_preview', function() {
      * @private
      */
     insertIntoStore_: function(destination) {
+
       var key = this.getKey_(destination);
       var existingDestination = this.destinationMap_[key];
       if (existingDestination == null) {
+        for (var destinationIdNum = 0;
+          destinationIdNum < this.appState_.recentDestinationIds.length;
+              destinationIdNum++) {
+          if (this.appState_.recentDestinationIds &&
+              this.appState_.recentDestinationIds[destinationIdNum] &&
+              (destination.id ==
+               this.appState_.recentDestinationIds[destinationIdNum]) &&
+              (destination.origin ==
+               this.appState_.recentDestinationOrigins[destinationIdNum])) {
+             destination.isRecent = true;
+          }
+        }
         this.destinations_.push(destination);
         this.destinationMap_[key] = destination;
         return true;