Make printing work better with OOPIF.

android_webview/renderer/aw_print_web_view_helper_delegate.h

Index: android_webview/renderer/aw_print_web_view_helper_delegate.h
diff --git a/android_webview/renderer/aw_print_web_view_helper_delegate.h b/android_webview/renderer/aw_print_web_view_helper_delegate.h
index 6d9eac58e33cd530271639772495c57b7208cd91..9517cf5db6e97ed26576e0f12665ae4c06f84177 100644
--- a/android_webview/renderer/aw_print_web_view_helper_delegate.h
+++ b/android_webview/renderer/aw_print_web_view_helper_delegate.h
@@ -13,7 +13,10 @@ class AwPrintWebViewHelperDelegate
     : public printing::PrintWebViewHelper::Delegate {
  public:
   ~AwPrintWebViewHelperDelegate() override;
-  bool CancelPrerender(content::RenderView* render_view,
+
+ private:
+  // printing::PrintWebViewHelper::Delegate:
+  bool CancelPrerender(content::RenderFrame* render_frame,
                        int routing_id) override;
   blink::WebElement GetPdfElement(blink::WebLocalFrame* frame) override;
   bool IsPrintPreviewEnabled() override;