PlzNavigate: Move the navigation logic to NavigatorImpl

content/browser/frame_host/frame_tree_node.cc

Index: content/browser/frame_host/frame_tree_node.cc
diff --git a/content/browser/frame_host/frame_tree_node.cc b/content/browser/frame_host/frame_tree_node.cc
index 180d8461cb00cc3d930b5a661e097aec6c34612b..bc044bcf8671fd806ecfdafe4126553881364b30 100644
--- a/content/browser/frame_host/frame_tree_node.cc
+++ b/content/browser/frame_host/frame_tree_node.cc
@@ -6,11 +6,13 @@
 
 #include <queue>
 
+#include "base/command_line.h"
 #include "base/stl_util.h"
 #include "content/browser/frame_host/frame_tree.h"
 #include "content/browser/frame_host/navigator.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
+#include "content/public/common/content_switches.h"
 
 namespace content {
 
@@ -35,6 +37,10 @@ FrameTreeNode::FrameTreeNode(FrameTree* frame_tree,
       parent_(NULL) {}
 
 FrameTreeNode::~FrameTreeNode() {
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableBrowserSideNavigation)) {
+    navigator_->CancelNavigation(this);
+  }
 }
 
 bool FrameTreeNode::IsMainFrame() const {