PlzNavigate: move ownership of the NavigationRequest to the FrameTreeNode

content/browser/frame_host/navigator_impl.h

Index: content/browser/frame_host/navigator_impl.h
diff --git a/content/browser/frame_host/navigator_impl.h b/content/browser/frame_host/navigator_impl.h
index debf309aba67d4d3918bab66bedd250f7993ac0a..724ed2f576dff8f9178219ac00bfa83fcd9cae71 100644
--- a/content/browser/frame_host/navigator_impl.h
+++ b/content/browser/frame_host/navigator_impl.h
@@ -85,11 +85,6 @@ class CONTENT_EXPORT NavigatorImpl : public Navigator {
   void CancelNavigation(FrameTreeNode* frame_tree_node) override;
   bool IsWaitingForBeforeUnloadACK(FrameTreeNode* frame_tree_node) override;
 
-  // PlzNavigate
-  // Returns the navigation request for a given node. Used in tests.
-  NavigationRequest* GetNavigationRequestForNodeForTesting(
-      FrameTreeNode* frame_tree_node);
-
  private:
   // Holds data used to track browser side navigation metrics.
   struct NavigationMetricsData;
@@ -139,11 +134,6 @@ class CONTENT_EXPORT NavigatorImpl : public Navigator {
 
   scoped_ptr<NavigatorImpl::NavigationMetricsData> navigation_data_;
 
-  // PlzNavigate: used to track the various ongoing NavigationRequests in the
-  // different FrameTreeNodes, based on the frame_tree_node_id.
-  typedef base::ScopedPtrHashMap<int64, NavigationRequest> NavigationRequestMap;
-  NavigationRequestMap navigation_request_map_;
-
   DISALLOW_COPY_AND_ASSIGN(NavigatorImpl);
 };