Print Preview: Get printer info with capabilities.

printing/backend/print_backend_dummy.cc

Index: printing/backend/print_backend_dummy.cc
diff --git a/printing/backend/print_backend_dummy.cc b/printing/backend/print_backend_dummy.cc
index 43ede8920e8ce9507730fc7cba1b1125fa42c8d9..e4cde2d86bc230bbe82cd2addb070680c62935b4 100644
--- a/printing/backend/print_backend_dummy.cc
+++ b/printing/backend/print_backend_dummy.cc
@@ -27,6 +27,11 @@ class DummyPrintBackend : public PrintBackend {
     return std::string();
   }
 
+  bool GetPrinterBasicInfo(const std::string& printer_name,
+                           PrinterBasicInfo* printer_info) override {
+    return false;
+  }
+
   bool GetPrinterSemanticCapsAndDefaults(
       const std::string& printer_name,
       PrinterSemanticCapsAndDefaults* printer_info) override {