[clang-format] Remove requirement that port_platform.h is at the top (#36276)

Closes #36276

COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36276 from ctiller:port_platform-include-grpcpp-clang-format 324257753042129f795e03574d8a4cb58be72c26
PiperOrigin-RevId: 623302430

14 files changed, 10 insertions, 26 deletions

diff --git a/include/grpcpp/.clang-format b/include/grpcpp/.clang-format
index 64387e9e51..5f150ef6ed 100644
--- a/include/grpcpp/.clang-format
+++ b/include/grpcpp/.clang-format
@@ -5,9 +5,6 @@ DerivePointerAlignment: false
 PointerAlignment: Left
 IncludeBlocks: Regroup
 IncludeCategories:
-  # port_platform.h is before almost everything
-  - Regex: '^<grpc/(support|impl/codegen)/port_platform.h>'
-    Priority: -100
   # ruby.h is even more first if it's included
   - Regex: '^<ruby/ruby.h>'
     Priority: -200
diff --git a/include/grpcpp/create_channel_posix.h b/include/grpcpp/create_channel_posix.h
index 651471da01..c4eb30c8d8 100644
--- a/include/grpcpp/create_channel_posix.h
+++ b/include/grpcpp/create_channel_posix.h
@@ -19,10 +19,9 @@
 #ifndef GRPCPP_CREATE_CHANNEL_POSIX_H
 #define GRPCPP_CREATE_CHANNEL_POSIX_H
 
-#include <grpc/support/port_platform.h>
-
 #include <memory>
 
+#include <grpc/support/port_platform.h>
 #include <grpcpp/channel.h>
 #include <grpcpp/support/channel_arguments.h>
 
diff --git a/include/grpcpp/ext/channelz_service_plugin.h b/include/grpcpp/ext/channelz_service_plugin.h
index 23882abb50..c048fce28f 100644
--- a/include/grpcpp/ext/channelz_service_plugin.h
+++ b/include/grpcpp/ext/channelz_service_plugin.h
@@ -20,7 +20,6 @@
 #define GRPCPP_EXT_CHANNELZ_SERVICE_PLUGIN_H
 
 #include <grpc/support/port_platform.h>
-
 #include <grpcpp/impl/server_builder_plugin.h>
 #include <grpcpp/impl/server_initializer.h>
 #include <grpcpp/support/config.h>
diff --git a/include/grpcpp/ext/csm_observability.h b/include/grpcpp/ext/csm_observability.h
index dcb7bd8c29..af7b42f4d1 100644
--- a/include/grpcpp/ext/csm_observability.h
+++ b/include/grpcpp/ext/csm_observability.h
@@ -19,8 +19,6 @@
 #ifndef GRPCPP_EXT_CSM_OBSERVABILITY_H
 #define GRPCPP_EXT_CSM_OBSERVABILITY_H
 
-#include <grpc/support/port_platform.h>
-
 #include <memory>
 
 #include "absl/functional/any_invocable.h"
@@ -28,6 +26,7 @@
 #include "absl/strings/string_view.h"
 #include "opentelemetry/metrics/meter_provider.h"
 
+#include <grpc/support/port_platform.h>
 #include <grpcpp/ext/otel_plugin.h>
 
 namespace grpc {
diff --git a/include/grpcpp/ext/gcp_observability.h b/include/grpcpp/ext/gcp_observability.h
index b215312c68..df270bec88 100644
--- a/include/grpcpp/ext/gcp_observability.h
+++ b/include/grpcpp/ext/gcp_observability.h
@@ -17,11 +17,10 @@
 #ifndef GRPCPP_EXT_GCP_OBSERVABILITY_H
 #define GRPCPP_EXT_GCP_OBSERVABILITY_H
 
-#include <grpc/support/port_platform.h>
-
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 
+#include <grpc/support/port_platform.h>
 #include <grpcpp/impl/grpc_library.h>
 
 namespace grpc {
diff --git a/include/grpcpp/ext/otel_plugin.h b/include/grpcpp/ext/otel_plugin.h
index c35f02dcb0..c9327d68d0 100644
--- a/include/grpcpp/ext/otel_plugin.h
+++ b/include/grpcpp/ext/otel_plugin.h
@@ -19,8 +19,6 @@
 #ifndef GRPCPP_EXT_OTEL_PLUGIN_H
 #define GRPCPP_EXT_OTEL_PLUGIN_H
 
-#include <grpc/support/port_platform.h>
-
 #include <stddef.h>
 #include <stdint.h>
 
@@ -32,6 +30,7 @@
 #include "opentelemetry/metrics/meter_provider.h"
 
 #include <grpc/support/metrics.h>
+#include <grpc/support/port_platform.h>
 
 namespace grpc {
 
diff --git a/include/grpcpp/ext/server_load_reporting.h b/include/grpcpp/ext/server_load_reporting.h
index 8b4e7e371f..416e9548fb 100644
--- a/include/grpcpp/ext/server_load_reporting.h
+++ b/include/grpcpp/ext/server_load_reporting.h
@@ -19,9 +19,8 @@
 #ifndef GRPCPP_EXT_SERVER_LOAD_REPORTING_H
 #define GRPCPP_EXT_SERVER_LOAD_REPORTING_H
 
-#include <grpc/support/port_platform.h>
-
 #include <grpc/load_reporting.h>
+#include <grpc/support/port_platform.h>
 #include <grpcpp/impl/server_builder_option.h>
 #include <grpcpp/server_context.h>
 #include <grpcpp/support/config.h>
diff --git a/include/grpcpp/generic/async_generic_service.h b/include/grpcpp/generic/async_generic_service.h
index cd9d43dfe3..77525d13b2 100644
--- a/include/grpcpp/generic/async_generic_service.h
+++ b/include/grpcpp/generic/async_generic_service.h
@@ -20,7 +20,6 @@
 #define GRPCPP_GENERIC_ASYNC_GENERIC_SERVICE_H
 
 #include <grpc/support/port_platform.h>
-
 #include <grpcpp/impl/server_callback_handlers.h>
 #include <grpcpp/support/async_stream.h>
 #include <grpcpp/support/byte_buffer.h>
diff --git a/include/grpcpp/server.h b/include/grpcpp/server.h
index 63ae1c69d6..3c56b6a06a 100644
--- a/include/grpcpp/server.h
+++ b/include/grpcpp/server.h
@@ -19,14 +19,13 @@
 #ifndef GRPCPP_SERVER_H
 #define GRPCPP_SERVER_H
 
-#include <grpc/support/port_platform.h>
-
 #include <list>
 #include <memory>
 #include <vector>
 
 #include <grpc/compression.h>
 #include <grpc/support/atm.h>
+#include <grpc/support/port_platform.h>
 #include <grpcpp/channel.h>
 #include <grpcpp/completion_queue.h>
 #include <grpcpp/health_check_service_interface.h>
diff --git a/include/grpcpp/server_builder.h b/include/grpcpp/server_builder.h
index 9f5e2cc7dc..e6266a90d9 100644
--- a/include/grpcpp/server_builder.h
+++ b/include/grpcpp/server_builder.h
@@ -19,8 +19,6 @@
 #ifndef GRPCPP_SERVER_BUILDER_H
 #define GRPCPP_SERVER_BUILDER_H
 
-#include <grpc/support/port_platform.h>
-
 #include <climits>
 #include <map>
 #include <memory>
@@ -28,6 +26,7 @@
 
 #include <grpc/compression.h>
 #include <grpc/support/cpu.h>
+#include <grpc/support/port_platform.h>
 #include <grpc/support/workaround_list.h>
 #include <grpcpp/impl/channel_argument_option.h>
 #include <grpcpp/impl/server_builder_option.h>
diff --git a/include/grpcpp/server_context.h b/include/grpcpp/server_context.h
index d860be1609..eb72e36b4a 100644
--- a/include/grpcpp/server_context.h
+++ b/include/grpcpp/server_context.h
@@ -19,8 +19,6 @@
 #ifndef GRPCPP_SERVER_CONTEXT_H
 #define GRPCPP_SERVER_CONTEXT_H
 
-#include <grpc/support/port_platform.h>
-
 #include <atomic>
 #include <cassert>
 #include <map>
@@ -31,6 +29,7 @@
 #include <grpc/grpc.h>
 #include <grpc/impl/call.h>
 #include <grpc/impl/compression_types.h>
+#include <grpc/support/port_platform.h>
 #include <grpcpp/impl/call.h>
 #include <grpcpp/impl/call_op_set.h>
 #include <grpcpp/impl/codegen/create_auth_context.h>
diff --git a/include/grpcpp/server_interface.h b/include/grpcpp/server_interface.h
index d990d8c7ac..5f8f8b54b0 100644
--- a/include/grpcpp/server_interface.h
+++ b/include/grpcpp/server_interface.h
@@ -19,11 +19,10 @@
 #ifndef GRPCPP_SERVER_INTERFACE_H
 #define GRPCPP_SERVER_INTERFACE_H
 
-#include <grpc/support/port_platform.h>
-
 #include <grpc/grpc.h>
 #include <grpc/impl/grpc_types.h>
 #include <grpc/support/log.h>
+#include <grpc/support/port_platform.h>
 #include <grpc/support/time.h>
 #include <grpcpp/impl/call.h>
 #include <grpcpp/impl/call_hook.h>
diff --git a/include/grpcpp/server_posix.h b/include/grpcpp/server_posix.h
index 75ef4470b7..8132c01cf9 100644
--- a/include/grpcpp/server_posix.h
+++ b/include/grpcpp/server_posix.h
@@ -19,10 +19,9 @@
 #ifndef GRPCPP_SERVER_POSIX_H
 #define GRPCPP_SERVER_POSIX_H
 
-#include <grpc/support/port_platform.h>
-
 #include <memory>
 
+#include <grpc/support/port_platform.h>
 #include <grpcpp/server.h>
 
 namespace grpc {
diff --git a/include/grpcpp/xds_server_builder.h b/include/grpcpp/xds_server_builder.h
index f51c526078..27ee76aa7a 100644
--- a/include/grpcpp/xds_server_builder.h
+++ b/include/grpcpp/xds_server_builder.h
@@ -20,7 +20,6 @@
 #define GRPCPP_XDS_SERVER_BUILDER_H
 
 #include <grpc/support/port_platform.h>
-
 #include <grpcpp/server_builder.h>
 
 namespace grpc {