tp: Interval tree implementation

This is noop and is might change when plugged into the interval intersect implementation.

Change-Id: I12064da4e6f39459357d404e6d901ad64adb48cc
diff --git a/Android.bp b/Android.bp
index b379ef7..ead1914 100644
--- a/Android.bp
+++ b/Android.bp
@@ -11871,6 +11871,7 @@
     srcs: [
         "src/trace_processor/containers/bit_vector_unittest.cc",
         "src/trace_processor/containers/implicit_segment_forest_unittest.cc",
+        "src/trace_processor/containers/interval_tree_unittest.cc",
         "src/trace_processor/containers/null_term_string_view_unittest.cc",
         "src/trace_processor/containers/row_map_unittest.cc",
         "src/trace_processor/containers/string_pool_unittest.cc",