Implement window.print() on Android

chrome/renderer/printing/print_web_view_helper.h

Index: chrome/renderer/printing/print_web_view_helper.h
diff --git a/chrome/renderer/printing/print_web_view_helper.h b/chrome/renderer/printing/print_web_view_helper.h
index f4d7aaa3bf9a72bc40a494123397de8669f7a1f1..64cf584995d1b35b5d34b18c4957991f3ae8f922 100644
--- a/chrome/renderer/printing/print_web_view_helper.h
+++ b/chrome/renderer/printing/print_web_view_helper.h
@@ -169,7 +169,9 @@ class PrintWebViewHelper
 
   // Main printing code -------------------------------------------------------
 
-  void Print(blink::WebLocalFrame* frame, const blink::WebNode& node);
+  void Print(blink::WebLocalFrame* frame,
+             const blink::WebNode& node,
+             const bool use_system_specific_flow = false);
 
   // Notification when printing is done - signal tear-down/free resources.
   void DidFinishPrinting(PrintingResult result);
@@ -200,7 +202,8 @@ class PrintWebViewHelper
   // Return false if the user cancels or on error.
   bool GetPrintSettingsFromUser(blink::WebFrame* frame,
                                 const blink::WebNode& node,
-                                int expected_pages_count);
+                                int expected_pages_count,
+                                const bool use_system_specific_flow);
 
   // Page Printing / Rendering ------------------------------------------------