Print Preview: Hook up the print button to initiate printing without displaying a print dialog.

chrome/browser/renderer_host/render_view_host.cc

Index: chrome/browser/renderer_host/render_view_host.cc
diff --git a/chrome/browser/renderer_host/render_view_host.cc b/chrome/browser/renderer_host/render_view_host.cc
index 88c47467b86b5ea0c3409d5e7c1e3397667d1338..648691f295d82cdfa5565657f2d872d3cded6071 100644
--- a/chrome/browser/renderer_host/render_view_host.cc
+++ b/chrome/browser/renderer_host/render_view_host.cc
@@ -1261,8 +1261,8 @@ void RenderViewHost::PrintNodeUnderContextMenu() {
   Send(new ViewMsg_PrintNodeUnderContextMenu(routing_id()));
 }
 
-void RenderViewHost::PrintForPrintPreview() {
-  Send(new ViewMsg_PrintForPrintPreview(routing_id()));
+void RenderViewHost::PrintForPrintPreview(const std::string& job_settings) {
+  Send(new ViewMsg_PrintForPrintPreview(routing_id(), job_settings));
 }
 
 void RenderViewHost::OnMsgStartDragging(