Add ReferenceCounted base class.
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index 3c564e2..1d84dcb 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -1031,11 +1031,13 @@
src/core/lib/support/atomic.h \
src/core/lib/support/atomic_with_atm.h \
src/core/lib/support/atomic_with_std.h \
+src/core/lib/support/debug_location.h \
src/core/lib/support/env.h \
src/core/lib/support/manual_constructor.h \
src/core/lib/support/memory.h \
src/core/lib/support/mpscq.h \
src/core/lib/support/murmur_hash.h \
+src/core/lib/support/reference_counted.h \
src/core/lib/support/spinlock.h \
src/core/lib/support/stack_lockfree.h \
src/core/lib/support/string.h \
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index 5674124..5b289e7 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -1281,6 +1281,7 @@
src/core/lib/support/cpu_linux.cc \
src/core/lib/support/cpu_posix.cc \
src/core/lib/support/cpu_windows.cc \
+src/core/lib/support/debug_location.h \
src/core/lib/support/env.h \
src/core/lib/support/env_linux.cc \
src/core/lib/support/env_posix.cc \
@@ -1298,6 +1299,8 @@
src/core/lib/support/mpscq.h \
src/core/lib/support/murmur_hash.cc \
src/core/lib/support/murmur_hash.h \
+src/core/lib/support/reference_counted.cc \
+src/core/lib/support/reference_counted.h \
src/core/lib/support/spinlock.h \
src/core/lib/support/stack_lockfree.cc \
src/core/lib/support/stack_lockfree.h \