Some required fixes for HTMLViewer rotate

android_webview/native/state_serializer.cc

Index: android_webview/native/state_serializer.cc
diff --git a/android_webview/native/state_serializer.cc b/android_webview/native/state_serializer.cc
index 84827697fd1d1ae47dd38973b27ab4586e32da47..656b2d03dec29e1257ef0e50c24462d1a9888740 100644
--- a/android_webview/native/state_serializer.cc
+++ b/android_webview/native/state_serializer.cc
@@ -98,6 +98,8 @@ bool RestoreFromPickle(PickleIterator* iterator,
     if (!internal::RestoreNavigationEntryFromPickle(iterator,
                                                     restored_entries[i]))
       return false;
+
+    restored_entries[i]->SetPageID(i);
   }
 
   // |web_contents| takes ownership of these entries after this call.