tp: add flatten/storageptr functions to StorageLayer and OverlayLayer

Change-Id: I6f0edc91d56b038b5fce7f470249e5666cffd3d0
diff --git a/Android.bp b/Android.bp
index a5d2cc2..2c5f0ae 100644
--- a/Android.bp
+++ b/Android.bp
@@ -12090,9 +12090,11 @@
         "src/trace_processor/db/column/id_storage.cc",
         "src/trace_processor/db/column/null_overlay.cc",
         "src/trace_processor/db/column/numeric_storage.cc",
+        "src/trace_processor/db/column/overlay_layer.cc",
         "src/trace_processor/db/column/range_overlay.cc",
         "src/trace_processor/db/column/selector_overlay.cc",
         "src/trace_processor/db/column/set_id_storage.cc",
+        "src/trace_processor/db/column/storage_layer.cc",
         "src/trace_processor/db/column/string_storage.cc",
         "src/trace_processor/db/column/utils.cc",
     ],