Fix tests to behave properly with ISNs/DSNs.

content/test/test_render_frame_host.cc

Index: content/test/test_render_frame_host.cc
diff --git a/content/test/test_render_frame_host.cc b/content/test/test_render_frame_host.cc
index 11d09572648cccdc5d74e9e3c7aaa6f98e50ec64..f78cde14b7ae83a222827b29aebdf6444e1d1b3f 100644
--- a/content/test/test_render_frame_host.cc
+++ b/content/test/test_render_frame_host.cc
@@ -316,6 +316,26 @@ void TestRenderFrameHost::SendNavigateWithParameters(
   // Simulate Blink assigning an item sequence number to the navigation.
   params.item_sequence_number = base::Time::Now().ToDoubleT() * 1000000;
 
+  // When the user hits enter in the Omnibox without changing the URL, Blink
+  // behaves similarly to a reload and does not change the item and document
+  // sequence numbers. Simulate this behavior here too.

[Charlie Reis, 2016/08/08 21:27:11]

Hmm.  This won't be stale when we remove NAVIGATION_TYPE_SAME_PAGE, will it?  I
suppose Blink will still behave the same, so this is fine to keep.

[nasko, 2016/08/08 21:57:08]

This is more or less relying on Blink keeping its behavior the same. I can put a
TODO here to revisit if/when we kill SAME_PAGE classification.

+  if (transition == ui::PAGE_TRANSITION_TYPED) {
+    const NavigationEntryImpl* entry =
+        static_cast<NavigationEntryImpl*>(frame_tree_node()
+                                              ->navigator()
+                                              ->GetController()
+                                              ->GetLastCommittedEntry());
+    if (entry && entry->GetURL() == url) {
+      FrameNavigationEntry* frame_entry =
+          entry->GetFrameEntry(frame_tree_node());
+      if (frame_entry) {
+        params.item_sequence_number = frame_entry->item_sequence_number();
+        params.document_sequence_number =
+            frame_entry->document_sequence_number();
+      }
+    }
+  }
+
   // In most cases, the origin will match the URL's origin.  Tests that need to
   // check corner cases (like about:blank) should specify the origin param
   // manually.