Fix certificate viewer not showing up for subresources if the devtools window is docked.

chrome/browser/devtools/devtools_window.h

Index: chrome/browser/devtools/devtools_window.h
diff --git a/chrome/browser/devtools/devtools_window.h b/chrome/browser/devtools/devtools_window.h
index 55af5e509f74b813d0a30fb33da2c1b7b4a89d94..9ea23b2672ec80a6b2a31430d69738852ed64d8f 100644
--- a/chrome/browser/devtools/devtools_window.h
+++ b/chrome/browser/devtools/devtools_window.h
@@ -306,6 +306,9 @@ class DevToolsWindow : public DevToolsUIBindings::Delegate,
                       const content::FileChooserParams& params) override;
   bool PreHandleGestureEvent(content::WebContents* source,
                              const blink::WebGestureEvent& event) override;
+  void ShowCertificateViewerInDevTools(
+      content::WebContents* web_contents,
+      scoped_refptr<net::X509Certificate> certificate) override;
 
   // content::DevToolsUIBindings::Delegate overrides
   void ActivateWindow() override;