Revert of Solidify Entry discarding logic (NavigationHandle keeps its ID)

content/browser/frame_host/navigation_handle_impl.cc

Index: content/browser/frame_host/navigation_handle_impl.cc
diff --git a/content/browser/frame_host/navigation_handle_impl.cc b/content/browser/frame_host/navigation_handle_impl.cc
index 05a6a947aa783bfdd0f5ef0c3cee5da09ad343f7..316bf66638b0475740fb3bea1ff304abc14189a6 100644
--- a/content/browser/frame_host/navigation_handle_impl.cc
+++ b/content/browser/frame_host/navigation_handle_impl.cc
@@ -35,11 +35,9 @@
     FrameTreeNode* frame_tree_node,
     bool is_synchronous,
     bool is_srcdoc,
-    const base::TimeTicks& navigation_start,
-    int pending_nav_entry_id) {
-  return scoped_ptr<NavigationHandleImpl>(
-      new NavigationHandleImpl(url, frame_tree_node, is_synchronous, is_srcdoc,
-                               navigation_start, pending_nav_entry_id));
+    const base::TimeTicks& navigation_start) {
+  return scoped_ptr<NavigationHandleImpl>(new NavigationHandleImpl(
+      url, frame_tree_node, is_synchronous, is_srcdoc, navigation_start));
 }
 
 NavigationHandleImpl::NavigationHandleImpl(
@@ -47,8 +45,7 @@
     FrameTreeNode* frame_tree_node,
     bool is_synchronous,
     bool is_srcdoc,
-    const base::TimeTicks& navigation_start,
-    int pending_nav_entry_id)
+    const base::TimeTicks& navigation_start)
     : url_(url),
       is_post_(false),
       has_user_gesture_(false),
@@ -64,8 +61,7 @@
       is_transferring_(false),
       frame_tree_node_(frame_tree_node),
       next_index_(0),
-      navigation_start_(navigation_start),
-      pending_nav_entry_id_(pending_nav_entry_id) {
+      navigation_start_(navigation_start) {
   DCHECK(!navigation_start.is_null());
   GetDelegate()->DidStartNavigation(this);
 }