Fixed all overloaded virtual methods on Windows.

printing/printing_context_win.h

Index: printing/printing_context_win.h
diff --git a/printing/printing_context_win.h b/printing/printing_context_win.h
index 792088a804b70210cdd2bec811888b242639e5fb..68d9153b36a343b4ffbab6469adadd77938d0618 100644
--- a/printing/printing_context_win.h
+++ b/printing/printing_context_win.h
@@ -53,11 +53,6 @@ class PRINTING_EXPORT PrintingContextWin : public PrintingContext {
   void set_context(HDC context) { context_ = context; }
 
  private:
-  virtual scoped_ptr<DEVMODE, base::FreeDeleter> ShowPrintDialog(
-      HANDLE printer,
-      gfx::NativeView parent_view,
-      DEVMODE* dev_mode);
-
   // Used in response to the user canceling the printing.
   static BOOL CALLBACK AbortProc(HDC hdc, int nCode);