Move margin processing code to the browser process.

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 3cd117e9e82e25a844efc79092c0cfa4a423afc6..0ebfb8eaab2bd5cd8832f0950ac678df2007e491 100644
--- a/chrome/renderer/print_web_view_helper.h
+++ b/chrome/renderer/print_web_view_helper.h
@@ -178,7 +178,9 @@ class PrintWebViewHelper
   // Update the current print settings with new |job_settings|. |job_settings|
   // dictionary contains print job details such as printer name, number of
   // copies, page range, etc.
-  bool UpdatePrintSettings(const base::DictionaryValue& job_settings,
+  bool UpdatePrintSettings(WebKit::WebFrame* frame,
+                           const WebKit::WebNode& node,
+                           const base::DictionaryValue& passed_job_settings,
                            bool generating_preview);
 
   // Get final print settings from the user.