Fixing headers and paths after merge with upstream.
diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index 0cd6ddd..96708c0 100644
--- a/tools/doxygen/Doxyfile.c++
+++ b/tools/doxygen/Doxyfile.c++
@@ -760,12 +760,10 @@
 # spaces.
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = include/grpc++/auth_metadata_processor.h \
-include/grpc++/channel.h \
+INPUT                  = include/grpc++/channel.h \
 include/grpc++/client_context.h \
 include/grpc++/completion_queue.h \
 include/grpc++/create_channel.h \
-include/grpc++/credentials.h \
 include/grpc++/generic/async_generic_service.h \
 include/grpc++/generic/generic_stub.h \
 include/grpc++/impl/call.h \
@@ -782,13 +780,15 @@
 include/grpc++/impl/thd.h \
 include/grpc++/impl/thd_cxx11.h \
 include/grpc++/impl/thd_no_cxx11.h \
+include/grpc++/security/auth_context.h \
+include/grpc++/security/auth_metadata_processor.h \
+include/grpc++/security/credentials.h \
+include/grpc++/security/server_credentials.h \
 include/grpc++/server.h \
 include/grpc++/server_builder.h \
 include/grpc++/server_context.h \
-include/grpc++/server_credentials.h \
 include/grpc++/support/async_stream.h \
 include/grpc++/support/async_unary_call.h \
-include/grpc++/support/auth_context.h \
 include/grpc++/support/byte_buffer.h \
 include/grpc++/support/channel_arguments.h \
 include/grpc++/support/config.h \
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index b2ebb2d..185d247 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -760,12 +760,10 @@
 # spaces.
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = include/grpc++/auth_metadata_processor.h \
-include/grpc++/channel.h \
+INPUT                  = include/grpc++/channel.h \
 include/grpc++/client_context.h \
 include/grpc++/completion_queue.h \
 include/grpc++/create_channel.h \
-include/grpc++/credentials.h \
 include/grpc++/generic/async_generic_service.h \
 include/grpc++/generic/generic_stub.h \
 include/grpc++/impl/call.h \
@@ -782,13 +780,15 @@
 include/grpc++/impl/thd.h \
 include/grpc++/impl/thd_cxx11.h \
 include/grpc++/impl/thd_no_cxx11.h \
+include/grpc++/security/auth_context.h \
+include/grpc++/security/auth_metadata_processor.h \
+include/grpc++/security/credentials.h \
+include/grpc++/security/server_credentials.h \
 include/grpc++/server.h \
 include/grpc++/server_builder.h \
 include/grpc++/server_context.h \
-include/grpc++/server_credentials.h \
 include/grpc++/support/async_stream.h \
 include/grpc++/support/async_unary_call.h \
-include/grpc++/support/auth_context.h \
 include/grpc++/support/byte_buffer.h \
 include/grpc++/support/channel_arguments.h \
 include/grpc++/support/config.h \
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index c912209..939261d 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -13088,12 +13088,10 @@
       "grpc"
     ], 
     "headers": [
-      "include/grpc++/auth_metadata_processor.h", 
       "include/grpc++/channel.h", 
       "include/grpc++/client_context.h", 
       "include/grpc++/completion_queue.h", 
       "include/grpc++/create_channel.h", 
-      "include/grpc++/credentials.h", 
       "include/grpc++/generic/async_generic_service.h", 
       "include/grpc++/generic/generic_stub.h", 
       "include/grpc++/impl/call.h", 
@@ -13110,13 +13108,15 @@
       "include/grpc++/impl/thd.h", 
       "include/grpc++/impl/thd_cxx11.h", 
       "include/grpc++/impl/thd_no_cxx11.h", 
+      "include/grpc++/security/auth_context.h", 
+      "include/grpc++/security/auth_metadata_processor.h", 
+      "include/grpc++/security/credentials.h", 
+      "include/grpc++/security/server_credentials.h", 
       "include/grpc++/server.h", 
       "include/grpc++/server_builder.h", 
       "include/grpc++/server_context.h", 
-      "include/grpc++/server_credentials.h", 
       "include/grpc++/support/async_stream.h", 
       "include/grpc++/support/async_unary_call.h", 
-      "include/grpc++/support/auth_context.h", 
       "include/grpc++/support/byte_buffer.h", 
       "include/grpc++/support/channel_arguments.h", 
       "include/grpc++/support/config.h", 
@@ -13140,12 +13140,10 @@
     "language": "c++", 
     "name": "grpc++", 
     "src": [
-      "include/grpc++/auth_metadata_processor.h", 
       "include/grpc++/channel.h", 
       "include/grpc++/client_context.h", 
       "include/grpc++/completion_queue.h", 
       "include/grpc++/create_channel.h", 
-      "include/grpc++/credentials.h", 
       "include/grpc++/generic/async_generic_service.h", 
       "include/grpc++/generic/generic_stub.h", 
       "include/grpc++/impl/call.h", 
@@ -13162,13 +13160,15 @@
       "include/grpc++/impl/thd.h", 
       "include/grpc++/impl/thd_cxx11.h", 
       "include/grpc++/impl/thd_no_cxx11.h", 
+      "include/grpc++/security/auth_context.h", 
+      "include/grpc++/security/auth_metadata_processor.h", 
+      "include/grpc++/security/credentials.h", 
+      "include/grpc++/security/server_credentials.h", 
       "include/grpc++/server.h", 
       "include/grpc++/server_builder.h", 
       "include/grpc++/server_context.h", 
-      "include/grpc++/server_credentials.h", 
       "include/grpc++/support/async_stream.h", 
       "include/grpc++/support/async_unary_call.h", 
-      "include/grpc++/support/auth_context.h", 
       "include/grpc++/support/byte_buffer.h", 
       "include/grpc++/support/channel_arguments.h", 
       "include/grpc++/support/config.h", 
@@ -13270,12 +13270,10 @@
       "grpc_unsecure"
     ], 
     "headers": [
-      "include/grpc++/auth_metadata_processor.h", 
       "include/grpc++/channel.h", 
       "include/grpc++/client_context.h", 
       "include/grpc++/completion_queue.h", 
       "include/grpc++/create_channel.h", 
-      "include/grpc++/credentials.h", 
       "include/grpc++/generic/async_generic_service.h", 
       "include/grpc++/generic/generic_stub.h", 
       "include/grpc++/impl/call.h", 
@@ -13292,13 +13290,15 @@
       "include/grpc++/impl/thd.h", 
       "include/grpc++/impl/thd_cxx11.h", 
       "include/grpc++/impl/thd_no_cxx11.h", 
+      "include/grpc++/security/auth_context.h", 
+      "include/grpc++/security/auth_metadata_processor.h", 
+      "include/grpc++/security/credentials.h", 
+      "include/grpc++/security/server_credentials.h", 
       "include/grpc++/server.h", 
       "include/grpc++/server_builder.h", 
       "include/grpc++/server_context.h", 
-      "include/grpc++/server_credentials.h", 
       "include/grpc++/support/async_stream.h", 
       "include/grpc++/support/async_unary_call.h", 
-      "include/grpc++/support/auth_context.h", 
       "include/grpc++/support/byte_buffer.h", 
       "include/grpc++/support/channel_arguments.h", 
       "include/grpc++/support/config.h", 
@@ -13319,12 +13319,10 @@
     "language": "c++", 
     "name": "grpc++_unsecure", 
     "src": [
-      "include/grpc++/auth_metadata_processor.h", 
       "include/grpc++/channel.h", 
       "include/grpc++/client_context.h", 
       "include/grpc++/completion_queue.h", 
       "include/grpc++/create_channel.h", 
-      "include/grpc++/credentials.h", 
       "include/grpc++/generic/async_generic_service.h", 
       "include/grpc++/generic/generic_stub.h", 
       "include/grpc++/impl/call.h", 
@@ -13341,13 +13339,15 @@
       "include/grpc++/impl/thd.h", 
       "include/grpc++/impl/thd_cxx11.h", 
       "include/grpc++/impl/thd_no_cxx11.h", 
+      "include/grpc++/security/auth_context.h", 
+      "include/grpc++/security/auth_metadata_processor.h", 
+      "include/grpc++/security/credentials.h", 
+      "include/grpc++/security/server_credentials.h", 
       "include/grpc++/server.h", 
       "include/grpc++/server_builder.h", 
       "include/grpc++/server_context.h", 
-      "include/grpc++/server_credentials.h", 
       "include/grpc++/support/async_stream.h", 
       "include/grpc++/support/async_unary_call.h", 
-      "include/grpc++/support/auth_context.h", 
       "include/grpc++/support/byte_buffer.h", 
       "include/grpc++/support/channel_arguments.h", 
       "include/grpc++/support/config.h",