Add more navigation tracing to RenderFrameHost and NavigationRequest.

content/browser/frame_host/navigation_request.h

Index: content/browser/frame_host/navigation_request.h
diff --git a/content/browser/frame_host/navigation_request.h b/content/browser/frame_host/navigation_request.h
index 095b77f53be296d0f25bc142816eb584d9934f7f..851fcfbbe11e7526339e35f3ef9b8b0d483c84b4 100644
--- a/content/browser/frame_host/navigation_request.h
+++ b/content/browser/frame_host/navigation_request.h
@@ -134,11 +134,6 @@ class CONTENT_EXPORT NavigationRequest : public NavigationURLLoaderDelegate {
 
   bool may_transfer() const { return may_transfer_; }
 
-  void SetWaitingForRendererResponse() {
-    DCHECK(state_ == NOT_STARTED);
-    state_ = WAITING_FOR_RENDERER_RESPONSE;
-  }
-
   AssociatedSiteInstanceType associated_site_instance_type() const {
     return associated_site_instance_type_;
   }
@@ -150,6 +145,8 @@ class CONTENT_EXPORT NavigationRequest : public NavigationURLLoaderDelegate {
     return navigation_handle_.get();
   }
 
+  void SetWaitingForRendererResponse();
+
   // Creates a NavigationHandle. This should be called after any previous
   // NavigationRequest for the FrameTreeNode has been destroyed.
   void CreateNavigationHandle(int pending_nav_entry_id);