Privatize host_port.h; was not used in any wrapped language implementation
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index 7ee7bb5..c969ac1 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -117,7 +117,6 @@
                       'include/grpc/support/avl.h',
                       'include/grpc/support/cmdline.h',
                       'include/grpc/support/cpu.h',
-                      'include/grpc/support/host_port.h',
                       'include/grpc/support/log.h',
                       'include/grpc/support/log_windows.h',
                       'include/grpc/support/port_platform.h',
@@ -196,6 +195,7 @@
     ss.source_files = 'src/core/lib/gpr/arena.h',
                       'src/core/lib/gpr/env.h',
                       'src/core/lib/gpr/fork.h',
+                      'src/core/lib/gpr/host_port.h',
                       'src/core/lib/gpr/mpscq.h',
                       'src/core/lib/gpr/murmur_hash.h',
                       'src/core/lib/gpr/spinlock.h',
@@ -725,6 +725,7 @@
     ss.private_header_files = 'src/core/lib/gpr/arena.h',
                               'src/core/lib/gpr/env.h',
                               'src/core/lib/gpr/fork.h',
+                              'src/core/lib/gpr/host_port.h',
                               'src/core/lib/gpr/mpscq.h',
                               'src/core/lib/gpr/murmur_hash.h',
                               'src/core/lib/gpr/spinlock.h',