Change filename to channelz
diff --git a/gRPC-C++.podspec b/gRPC-C++.podspec
index 0b15bb8..262de72 100644
--- a/gRPC-C++.podspec
+++ b/gRPC-C++.podspec
@@ -347,7 +347,7 @@
                       'src/core/lib/channel/channel_stack.h',
                       'src/core/lib/channel/channel_stack_builder.h',
                       'src/core/lib/channel/channel_trace.h',
-                      'src/core/lib/channel/channel_trace_registry.h',
+                      'src/core/lib/channel/channelz_registry.h',
                       'src/core/lib/channel/connected_channel.h',
                       'src/core/lib/channel/context.h',
                       'src/core/lib/channel/handshaker.h',
@@ -532,7 +532,7 @@
                               'src/core/lib/channel/channel_stack.h',
                               'src/core/lib/channel/channel_stack_builder.h',
                               'src/core/lib/channel/channel_trace.h',
-                              'src/core/lib/channel/channel_trace_registry.h',
+                              'src/core/lib/channel/channelz_registry.h',
                               'src/core/lib/channel/connected_channel.h',
                               'src/core/lib/channel/context.h',
                               'src/core/lib/channel/handshaker.h',