Include tile manager state in lthi state dump

cc/trees/layer_tree_host_impl.cc

Index: cc/trees/layer_tree_host_impl.cc
diff --git a/cc/trees/layer_tree_host_impl.cc b/cc/trees/layer_tree_host_impl.cc
index e155be69517bd86761125deddecbded319767b07..acd37ecb5dc7b666cc717aeb98fd658b27aaef6d 100644
--- a/cc/trees/layer_tree_host_impl.cc
+++ b/cc/trees/layer_tree_host_impl.cc
@@ -3200,6 +3200,10 @@ void LayerTreeHostImpl::AsValueWithFrameInto(
     state->BeginArray("tiles");
     tile_manager_->AllTilesAsValueInto(state);
     state->EndArray();
+
+    state->BeginDictionary("tile_manager_basic_state");
+    tile_manager_->BasicStateAsValueInto(state);
+    state->EndDictionary();
   }
   state->BeginDictionary("active_tree");
   active_tree_->AsValueInto(state);