Print preview not showing if default print is invalid.

chrome/renderer/print_web_view_helper.h

Index: chrome/renderer/print_web_view_helper.h
diff --git a/chrome/renderer/print_web_view_helper.h b/chrome/renderer/print_web_view_helper.h
index 5d980a6440dfcee7bb23a7607e6c24dcb5843b87..bf5e2df30eed4c17a118bc0e208d64da1123074e 100644
--- a/chrome/renderer/print_web_view_helper.h
+++ b/chrome/renderer/print_web_view_helper.h
@@ -109,6 +109,10 @@ class PrintWebViewHelper : public RenderViewObserver,
                            OnPrintForPrintPreview);
   FRIEND_TEST_ALL_PREFIXES(PrintWebViewHelperPreviewTest,
                            OnPrintForPrintPreviewFail);
+  FRIEND_TEST_ALL_PREFIXES(PrintWebViewHelperPreviewTest,
+                           OnPrintPreviewInvalidDefaultPrinter);
+  FRIEND_TEST_ALL_PREFIXES(PrintWebViewHelperPreviewTest,
+                           OnPrintForPrintPreviewInvalidPrinter);
 
 #if defined(OS_WIN) || defined(OS_MACOSX)
   FRIEND_TEST_ALL_PREFIXES(PrintWebViewHelperTest, PrintLayoutTest);
@@ -167,7 +171,9 @@ class PrintWebViewHelper : public RenderViewObserver,
   // Print Settings -----------------------------------------------------------
 
   // Initialize print page settings with default settings.
-  bool InitPrintSettings(WebKit::WebFrame* frame, WebKit::WebNode* node);
+  bool InitPrintSettings(WebKit::WebFrame* frame,
+                         WebKit::WebNode* node,
+                         bool is_preview);
 
   // Initialize print page settings with default settings and prepare the frame
   // for print. A new PrepareFrameAndViewForPrint is created to fulfill the