Fix lack of preview when GCP printer is selected.

printing/printing_context_win.cc

Index: printing/printing_context_win.cc
diff --git a/printing/printing_context_win.cc b/printing/printing_context_win.cc
index 70a3f91b1e307f6b028f51583cd3c39499548d2c..3a1da66e8efdac28aafe8b62cd28278862ae3c0d 100644
--- a/printing/printing_context_win.cc
+++ b/printing/printing_context_win.cc
@@ -330,6 +330,7 @@ PrintingContext::Result PrintingContextWin::UpdatePrinterSettings(
   int color;
   bool landscape;
   bool print_to_pdf;
+  bool is_cloud_dialog;
   int copies;
   int duplex_mode;
   string16 device_name;
@@ -340,13 +341,14 @@ PrintingContext::Result PrintingContextWin::UpdatePrinterSettings(
       !job_settings.GetBoolean(kSettingPrintToPDF, &print_to_pdf) ||
       !job_settings.GetInteger(kSettingDuplexMode, &duplex_mode) ||
       !job_settings.GetInteger(kSettingCopies, &copies) ||
-      !job_settings.GetString(kSettingDeviceName, &device_name)) {
+      !job_settings.GetString(kSettingDeviceName, &device_name) ||
+      !job_settings.GetBoolean(kSettingCloudPrintDialog, &is_cloud_dialog)) {
     return OnError();
   }
 
   bool print_to_cloud = job_settings.HasKey(printing::kSettingCloudPrintId);
 
-  if (print_to_pdf || print_to_cloud) {
+  if (print_to_pdf || print_to_cloud || is_cloud_dialog) {
     // Default fallback to Letter size.
     gfx::Size paper_size;
     gfx::Rect paper_rect;