Revert of More System Dialog printing code disabled on Windows.

chrome/renderer/printing/print_web_view_helper.cc

Index: chrome/renderer/printing/print_web_view_helper.cc
diff --git a/chrome/renderer/printing/print_web_view_helper.cc b/chrome/renderer/printing/print_web_view_helper.cc
index 29ae1140bdf84b3aa203c390bb2ad1a4e6eb1086..db73c37b671a68dc7e51984a865cf8c0f1daaa67 100644
--- a/chrome/renderer/printing/print_web_view_helper.cc
+++ b/chrome/renderer/printing/print_web_view_helper.cc
@@ -834,10 +834,8 @@ void PrintWebViewHelper::PrintPage(blink::WebLocalFrame* frame,
 bool PrintWebViewHelper::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PrintWebViewHelper, message)
-#if !defined(OS_WIN)
     IPC_MESSAGE_HANDLER(PrintMsg_PrintPages, OnPrintPages)
     IPC_MESSAGE_HANDLER(PrintMsg_PrintForSystemDialog, OnPrintForSystemDialog)
-#endif  // !OS_WIN
     IPC_MESSAGE_HANDLER(PrintMsg_InitiatePrintPreview, OnInitiatePrintPreview)
     IPC_MESSAGE_HANDLER(PrintMsg_PrintPreview, OnPrintPreview)
     IPC_MESSAGE_HANDLER(PrintMsg_PrintForPrintPreview, OnPrintForPrintPreview)
@@ -934,7 +932,6 @@ bool PrintWebViewHelper::GetPrintFrame(blink::WebLocalFrame** frame) {
   return true;
 }
 
-#if !defined(OS_WIN)
 void PrintWebViewHelper::OnPrintPages() {
   blink::WebLocalFrame* frame;
   if (GetPrintFrame(&frame))
@@ -947,9 +944,9 @@ void PrintWebViewHelper::OnPrintForSystemDialog() {
     NOTREACHED();
     return;
   }
+
   Print(frame, print_preview_context_.source_node());
 }
-#endif  // !OS_WIN
 
 void PrintWebViewHelper::GetPageSizeAndContentAreaFromPageLayout(
     const PageSizeMargins& page_layout_in_points,
@@ -1226,7 +1223,6 @@ void PrintWebViewHelper::PrintNode(const blink::WebNode& node) {
   print_node_in_progress_ = false;
 }
 
-#if !defined(OS_WIN)
 void PrintWebViewHelper::Print(blink::WebLocalFrame* frame,
                                const blink::WebNode& node) {
   // If still not finished with earlier print request simply ignore.
@@ -1260,7 +1256,6 @@ void PrintWebViewHelper::Print(blink::WebLocalFrame* frame,
     DidFinishPrinting(FAIL_PRINT);
   }
 }
-#endif  // !OS_WIN
 
 void PrintWebViewHelper::DidFinishPrinting(PrintingResult result) {
   switch (result) {