PlzNavigate: identify same-page browser-initiated navigation.

content/browser/frame_host/navigation_entry_impl.cc

Index: content/browser/frame_host/navigation_entry_impl.cc
diff --git a/content/browser/frame_host/navigation_entry_impl.cc b/content/browser/frame_host/navigation_entry_impl.cc
index b528804d67b54cdf9e73fa0adfcbb13afd9750b3..04c07a467122f2e00109f80b507c88569e20654a 100644
--- a/content/browser/frame_host/navigation_entry_impl.cc
+++ b/content/browser/frame_host/navigation_entry_impl.cc
@@ -702,7 +702,6 @@ StartNavigationParams NavigationEntryImpl::ConstructStartNavigationParams()
 
 RequestNavigationParams NavigationEntryImpl::ConstructRequestNavigationParams(
     const FrameNavigationEntry& frame_entry,
-    bool is_same_document_history_load,
     bool is_history_navigation_in_new_child,
     const std::map<std::string, bool>& subframe_unique_names,
     bool has_committed_real_load,
@@ -735,7 +734,7 @@ RequestNavigationParams NavigationEntryImpl::ConstructRequestNavigationParams(
 #endif
   RequestNavigationParams request_params(
       GetIsOverridingUserAgent(), redirects, GetCanLoadLocalResources(),
-      frame_entry.page_state(), GetUniqueID(), is_same_document_history_load,
+      frame_entry.page_state(), GetUniqueID(),
       is_history_navigation_in_new_child, subframe_unique_names,
       has_committed_real_load, intended_as_new_entry, pending_offset_to_send,
       current_offset_to_send, current_length_to_send, IsViewSourceMode(),