Only use pending navigation params for browser-initiated navigations.

content/renderer/render_frame_impl.h

Index: content/renderer/render_frame_impl.h
diff --git a/content/renderer/render_frame_impl.h b/content/renderer/render_frame_impl.h
index 670731fe8b7b6cac0b9500f9e188131f76d9007f..0b47510667bcf53475015f5deb21dc2f3a1aa0f5 100644
--- a/content/renderer/render_frame_impl.h
+++ b/content/renderer/render_frame_impl.h
@@ -521,7 +521,8 @@ class CONTENT_EXPORT RenderFrameImpl
   void didFinishLoad(blink::WebLocalFrame* frame) override;
   void didNavigateWithinPage(blink::WebLocalFrame* frame,
                              const blink::WebHistoryItem& item,
-                             blink::WebHistoryCommitType commit_type) override;
+                             blink::WebHistoryCommitType commit_type,
+                             bool content_initiated) override;
   void didUpdateCurrentHistoryItem() override;
   void didChangeThemeColor() override;
   void dispatchLoad() override;