Introduce a 'weak' and mutable version of slice hash table
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index a7b9131..443cf76 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -420,6 +420,7 @@
                       'src/core/lib/slice/slice_hash_table.h',
                       'src/core/lib/slice/slice_internal.h',
                       'src/core/lib/slice/slice_string_helpers.h',
+                      'src/core/lib/slice/slice_weak_hash_table.h',
                       'src/core/lib/surface/api_trace.h',
                       'src/core/lib/surface/call.h',
                       'src/core/lib/surface/call_test_only.h',
@@ -909,6 +910,7 @@
                               'src/core/lib/slice/slice_hash_table.h',
                               'src/core/lib/slice/slice_internal.h',
                               'src/core/lib/slice/slice_string_helpers.h',
+                              'src/core/lib/slice/slice_weak_hash_table.h',
                               'src/core/lib/surface/api_trace.h',
                               'src/core/lib/surface/call.h',
                               'src/core/lib/surface/call_test_only.h',