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

content/public/browser/content_browser_client.h

Index: content/public/browser/content_browser_client.h
diff --git a/content/public/browser/content_browser_client.h b/content/public/browser/content_browser_client.h
index e5c99223b423b2828f9aeb0273994ea55b915090..de6476dace9cf02b0733aff05f8a73cb99b90d35 100644
--- a/content/public/browser/content_browser_client.h
+++ b/content/public/browser/content_browser_client.h
@@ -763,6 +763,16 @@ class CONTENT_EXPORT ContentBrowserClient {
   // protected content.
   virtual std::unique_ptr<media::CdmFactory> CreateCdmFactory();
 
+  // Reports that passive mixed content was found at the specified WebContents.
+  virtual void PassiveInsecureContentFound(const GURL& resource_url);
+
+  // Checks if running of mixed-content is allowed for the specified
+  // WebContents/tab.
+  virtual bool ShouldAllowRunningInsecureContent(bool allowed_per_settings,
+                                                 const url::Origin& origin,
+                                                 const GURL& resource_url,
+                                                 WebContents* web_contents);
+
   // Populates |mappings| with all files that need to be mapped before launching
   // a child process.
 #if defined(OS_ANDROID)