Trigger print immediately on selecting GCP escape hatch on Chrome OS

BUG=102223
TEST=Bring up print preview in Chrome OS.  Open the printer selection dropdown and choose to search for additional printers.  Print preview should go away and cloud print dialog should appear.


Review URL: http://codereview.chromium.org/8341126

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@108155 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/print_preview/print_preview.js

@@ -272,6 +272,8 @@ function updateControlsWithSelectedPrinterCapabilities() {
         'printerColorModelForColor': print_preview.ColorSettings.COLOR,
         'printerDefaultDuplexValue': copiesSettings.UNKNOWN_DUPLEX_MODE,
         'disableCopiesOption': true});
+    if (cr.isChromeOS && selectedValue == PRINT_WITH_CLOUD_PRINT)
+      sendPrintDocumentRequest();
   } else {
     // This message will call back to 'updateWithPrinterCapabilities'
     // function.