Record UMA stats for subframes history navigations.

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index 88daf80dcaf5e3e2f22c8a3f7fa8f47575df62f8..af786cd3db90e14485382440bc2338814f75bf5d 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -993,7 +993,7 @@ void RenderFrameHostImpl::OnOpenURL(const FrameHostMsg_OpenURL_Params& params) {
     // Try to find a FrameNavigationEntry that matches this frame instead, based
     // on the frame's unique name.  If this can't be found, fall back to the
     // default params using OpenURL below.
-    if (frame_tree_node_->navigator()->NavigateNewChildFrame(this))
+    if (frame_tree_node_->navigator()->NavigateNewChildFrame(this, params.url))
       return;
   }