Add item and document sequence numbers to FrameNavigationEntry.

content/public/common/frame_navigate_params.cc

Index: content/public/common/frame_navigate_params.cc
diff --git a/content/public/common/frame_navigate_params.cc b/content/public/common/frame_navigate_params.cc
index 1aef9e51e510093dab5aeec09c28c32086407fe4..bcc90b5e7833b4c50721b9e8dba6de529095d778 100644
--- a/content/public/common/frame_navigate_params.cc
+++ b/content/public/common/frame_navigate_params.cc
@@ -9,6 +9,8 @@ namespace content {
 FrameNavigateParams::FrameNavigateParams()
     : page_id(0),
       nav_entry_id(0),
+      item_sequence_number(-1),
+      document_sequence_number(-1),
       transition(ui::PAGE_TRANSITION_LINK),
       should_update_history(false) {
 }