[TooManyTabs] Add TabNavigationThrottle

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 ab1628f6c0ccf3ce7752596f20cb0c0e97e7039b..52deb983b7d69848e901ef022dbdd5f9097ccafe 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -72,6 +72,7 @@
 #include "chrome/browser/renderer_host/chrome_navigation_ui_data.h"
 #include "chrome/browser/renderer_host/chrome_render_message_filter.h"
 #include "chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.h"
+#include "chrome/browser/resource_coordinator/background_tab_navigation_throttle.h"
 #include "chrome/browser/safe_browsing/browser_url_loader_throttle.h"
 #include "chrome/browser/safe_browsing/certificate_reporting_service.h"
 #include "chrome/browser/safe_browsing/certificate_reporting_service_factory.h"
@@ -3326,6 +3327,12 @@ ChromeContentBrowserClient::CreateThrottlesForNavigation(
                                                               &throttles);
   }
 
+  std::unique_ptr<content::NavigationThrottle> tab_navigation_throttle =
+      resource_coordinator::BackgroundTabNavigationThrottle::
+          MaybeCreateThrottleFor(handle);
+  if (tab_navigation_throttle)
+    throttles.push_back(std::move(tab_navigation_throttle));
+
   return throttles;
 }