Revert of PlzNavigate: move ownership of the NavigationRequest to the FrameTreeNode

content/browser/frame_host/navigation_controller_impl_unittest.cc

Index: content/browser/frame_host/navigation_controller_impl_unittest.cc
diff --git a/content/browser/frame_host/navigation_controller_impl_unittest.cc b/content/browser/frame_host/navigation_controller_impl_unittest.cc
index 847bbeb53d3bd3f78784558c0a2d33b0cb17b266..03d9d065af5be512cef1d6473a5d8c03d9274009 100644
--- a/content/browser/frame_host/navigation_controller_impl_unittest.cc
+++ b/content/browser/frame_host/navigation_controller_impl_unittest.cc
@@ -220,8 +220,10 @@
   bool HasNavigationRequest() {
     if (base::CommandLine::ForCurrentProcess()->HasSwitch(
             switches::kEnableBrowserSideNavigation)) {
-      return contents()->GetFrameTree()->root()->navigation_request() !=
-             nullptr;
+      FrameTreeNode* root = contents()->GetFrameTree()->root();
+      NavigationRequest* navigation_request = static_cast<NavigatorImpl*>(
+          root->navigator())->GetNavigationRequestForNodeForTesting(root);
+      return navigation_request != nullptr;
     }
     return process()->sink().GetFirstMessageMatching(FrameMsg_Navigate::ID)
         != nullptr;
@@ -230,8 +232,9 @@
   const GURL GetLastNavigationURL() {
     if (base::CommandLine::ForCurrentProcess()->HasSwitch(
             switches::kEnableBrowserSideNavigation)) {
-      NavigationRequest* navigation_request =
-          contents()->GetFrameTree()->root()->navigation_request();
+      FrameTreeNode* root = contents()->GetFrameTree()->root();
+      NavigationRequest* navigation_request = static_cast<NavigatorImpl*>(
+          root->navigator())->GetNavigationRequestForNodeForTesting(root);
       CHECK(navigation_request);
       return navigation_request->common_params().url;
     }