Adding new header in build.json.
diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index 790e637..57dbd78 100644
--- a/tools/doxygen/Doxyfile.c++
+++ b/tools/doxygen/Doxyfile.c++
@@ -763,6 +763,7 @@
 INPUT                  = include/grpc++/async_generic_service.h \
 include/grpc++/async_unary_call.h \
 include/grpc++/auth_context.h \
+include/grpc++/auth_metadata_processor.h \
 include/grpc++/byte_buffer.h \
 include/grpc++/channel_arguments.h \
 include/grpc++/channel_interface.h \
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index cd1279e..5b6cf59 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -763,6 +763,7 @@
 INPUT                  = include/grpc++/async_generic_service.h \
 include/grpc++/async_unary_call.h \
 include/grpc++/auth_context.h \
+include/grpc++/auth_metadata_processor.h \
 include/grpc++/byte_buffer.h \
 include/grpc++/channel_arguments.h \
 include/grpc++/channel_interface.h \
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index 7b82ef3..70f26f7 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -13036,6 +13036,7 @@
       "include/grpc++/async_generic_service.h", 
       "include/grpc++/async_unary_call.h", 
       "include/grpc++/auth_context.h", 
+      "include/grpc++/auth_metadata_processor.h", 
       "include/grpc++/byte_buffer.h", 
       "include/grpc++/channel_arguments.h", 
       "include/grpc++/channel_interface.h", 
@@ -13086,6 +13087,7 @@
       "include/grpc++/async_generic_service.h", 
       "include/grpc++/async_unary_call.h", 
       "include/grpc++/auth_context.h", 
+      "include/grpc++/auth_metadata_processor.h", 
       "include/grpc++/byte_buffer.h", 
       "include/grpc++/channel_arguments.h", 
       "include/grpc++/channel_interface.h", 
@@ -13210,6 +13212,7 @@
       "include/grpc++/async_generic_service.h", 
       "include/grpc++/async_unary_call.h", 
       "include/grpc++/auth_context.h", 
+      "include/grpc++/auth_metadata_processor.h", 
       "include/grpc++/byte_buffer.h", 
       "include/grpc++/channel_arguments.h", 
       "include/grpc++/channel_interface.h", 
@@ -13257,6 +13260,7 @@
       "include/grpc++/async_generic_service.h", 
       "include/grpc++/async_unary_call.h", 
       "include/grpc++/auth_context.h", 
+      "include/grpc++/auth_metadata_processor.h", 
       "include/grpc++/byte_buffer.h", 
       "include/grpc++/channel_arguments.h", 
       "include/grpc++/channel_interface.h",