Remove unused method RVHD::RendererManagement::OnCrossSiteNavigationCanceled().

content/browser/renderer_host/render_view_host_delegate.h

Index: content/browser/renderer_host/render_view_host_delegate.h
diff --git a/content/browser/renderer_host/render_view_host_delegate.h b/content/browser/renderer_host/render_view_host_delegate.h
index 6a8139af2305ce18dffb849ed596c057f2321aed..10f307bc992a1e36588d5e5773f30784cdfddfee 100644
--- a/content/browser/renderer_host/render_view_host_delegate.h
+++ b/content/browser/renderer_host/render_view_host_delegate.h
@@ -172,10 +172,6 @@ class CONTENT_EXPORT RenderViewHostDelegate : public IPC::Channel::Listener {
     virtual void OnCrossSiteResponse(int new_render_process_host_id,
                                      int new_request_id) = 0;
 
-    // Called the ResourceDispatcherHost's associate CrossSiteRequestHandler
-    // when a cross-site navigation has been canceled.
-    virtual void OnCrossSiteNavigationCanceled() = 0;
-
    protected:
     virtual ~RendererManagement() {}
   };