Convert SupervisedUserResourceThrottle to a NavigationThrottle.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 6f4e66500156f32a069b4792e265a539281612c8..3010f5a6c9b67e9eb7839e20d5c54b91c92a1e55 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -391,6 +391,10 @@
 #include "chrome/browser/metrics/leak_detector/leak_detector_remote_controller.h"
 #endif
 
+#if BUILDFLAG(ENABLE_SUPERVISED_USERS)
+#include "chrome/browser/supervised_user/supervised_user_navigation_throttle.h"
+#endif
+
 using base::FileDescriptor;
 using content::BrowserThread;
 using content::BrowserURLHandler;
@@ -3374,6 +3378,13 @@ ChromeContentBrowserClient::CreateThrottlesForNavigation(
     throttles.push_back(std::move(flash_url_throttle));
 #endif
 
+#if BUILDFLAG(ENABLE_SUPERVISED_USERS)
+  std::unique_ptr<content::NavigationThrottle> supervised_user_throttle =
+      SupervisedUserNavigationThrottle::MaybeCreateThrottleFor(handle);
+  if (supervised_user_throttle)
+    throttles.push_back(std::move(supervised_user_throttle));
+#endif
+
 #if defined(OS_ANDROID)
   // TODO(davidben): This is insufficient to integrate with prerender properly.
   // https://crbug.com/370595