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

BUG=657270

Review-Url: https://chromiumcodereview.appspot.com/2427323005
Cr-Commit-Position: refs/heads/master@{#426917}

chrome/browser/devtools/devtools_window.cc

@@ -1110,6 +1110,12 @@ bool DevToolsWindow::PreHandleGestureEvent(
       event.type == blink::WebGestureEvent::GesturePinchEnd;
 }
 
+void DevToolsWindow::ShowCertificateViewerInDevTools(
+    content::WebContents* web_contents,
+    scoped_refptr<net::X509Certificate> certificate) {
+  ShowCertificateViewer(certificate);
+}
+
 void DevToolsWindow::ActivateWindow() {
   if (life_stage_ != kLoadCompleted)
     return;

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;