PlzNavigate: Move navigation-level mixed content checks to the browser.

chrome/browser/ui/browser.h

Index: chrome/browser/ui/browser.h
diff --git a/chrome/browser/ui/browser.h b/chrome/browser/ui/browser.h
index dce38b644a549d05d094ef33e73bc8a20a5bad41..c741ab75d058398551c47b905edd79cf017a2327 100644
--- a/chrome/browser/ui/browser.h
+++ b/chrome/browser/ui/browser.h
@@ -496,6 +496,11 @@ class Browser : public TabStripModelObserver,
       const content::BluetoothChooser::EventHandler& event_handler) override;
   void RequestAppBannerFromDevTools(
       content::WebContents* web_contents) override;
+  void PassiveInsecureContentFound(const GURL& resource_url) override;
+  bool ShouldAllowRunningInsecureContent(content::WebContents* web_contents,
+                                         bool allowed_per_prefs,
+                                         const url::Origin& origin,
+                                         const GURL& resource_url) override;
 
   bool is_type_tabbed() const { return type_ == TYPE_TABBED; }
   bool is_type_popup() const { return type_ == TYPE_POPUP; }