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 086071421ca639438bd0ad00f1a63033d25384a0..0ceb099cb4aedc328b7455f7c85fd6e57c6342ce 100644
--- a/chrome/browser/ui/browser.h
+++ b/chrome/browser/ui/browser.h
@@ -496,6 +496,12 @@ 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(
+      bool allowed_per_settings,
+      const url::Origin& origin,
+      const GURL& resource_url,
+      content::WebContents* web_contents) override;
 
   bool is_type_tabbed() const { return type_ == TYPE_TABBED; }
   bool is_type_popup() const { return type_ == TYPE_POPUP; }