Do not reset NavigationHandle when navigating same-page

content/browser/frame_host/render_frame_host_impl.h

Index: content/browser/frame_host/render_frame_host_impl.h
diff --git a/content/browser/frame_host/render_frame_host_impl.h b/content/browser/frame_host/render_frame_host_impl.h
index 538b119bb2bb6134070b9306054d695c70b8756d..110a19e65431f158be4bdbb0267940eb214dcf8f 100644
--- a/content/browser/frame_host/render_frame_host_impl.h
+++ b/content/browser/frame_host/render_frame_host_impl.h
@@ -50,6 +50,7 @@ class GURL;
 struct AccessibilityHostMsg_EventParams;
 struct AccessibilityHostMsg_FindInPageResultParams;
 struct AccessibilityHostMsg_LocationChangeParams;
+struct FrameHostMsg_DidCommitProvisionalLoad_Params;
 struct FrameHostMsg_DidFailProvisionalLoadWithError_Params;
 struct FrameHostMsg_OpenURL_Params;
 struct FrameMsg_TextTrackSettings_Params;
@@ -809,6 +810,11 @@ class CONTENT_EXPORT RenderFrameHostImpl
   void OnRendererConnect(const service_manager::ServiceInfo& local_info,
                          const service_manager::ServiceInfo& remote_info);
 
+  // Returns ownership of the NavigationHandle associated with a navigation that
+  // just committed.
+  std::unique_ptr<NavigationHandleImpl> TakeNavigationHandleForCommit(
+      const FrameHostMsg_DidCommitProvisionalLoad_Params& params);
+
   // For now, RenderFrameHosts indirectly keep RenderViewHosts alive via a
   // refcount that calls Shutdown when it reaches zero.  This allows each
   // RenderFrameHostManager to just care about RenderFrameHosts, while ensuring