Moved ScatteredStreamDelegateForTesting to protozero from ftrace_reader

This removes a recent dependency on ftrace_reader::test_support from tracing::test_support;
this is needed by Chrome which builds the latter but can't build the former.

Bug: 76169489
Change-Id: I18677388eaac900797ee10321b3f3380e05384fb
diff --git a/Android.bp b/Android.bp
index 2406d00..1f25dec 100644
--- a/Android.bp
+++ b/Android.bp
@@ -285,7 +285,6 @@
     "src/ftrace_reader/ftrace_procfs_integrationtest.cc",
     "src/ftrace_reader/proto_translation_table.cc",
     "src/ftrace_reader/test/cpu_reader_support.cc",
-    "src/ftrace_reader/test/scattered_stream_delegate_for_testing.cc",
     "src/ipc/buffered_frame_deserializer.cc",
     "src/ipc/client_impl.cc",
     "src/ipc/deferred.cc",
@@ -298,6 +297,7 @@
     "src/protozero/message.cc",
     "src/protozero/message_handle.cc",
     "src/protozero/proto_utils.cc",
+    "src/protozero/scattered_stream_delegate_for_testing.cc",
     "src/protozero/scattered_stream_null_delegate.cc",
     "src/protozero/scattered_stream_writer.cc",
     "src/traced/probes/filesystem/file_scanner.cc",
@@ -3607,7 +3607,6 @@
     "src/ftrace_reader/proto_translation_table.cc",
     "src/ftrace_reader/proto_translation_table_unittest.cc",
     "src/ftrace_reader/test/cpu_reader_support.cc",
-    "src/ftrace_reader/test/scattered_stream_delegate_for_testing.cc",
     "src/ipc/buffered_frame_deserializer.cc",
     "src/ipc/buffered_frame_deserializer_unittest.cc",
     "src/ipc/client_impl.cc",
@@ -3632,6 +3631,7 @@
     "src/protozero/message_unittest.cc",
     "src/protozero/proto_utils.cc",
     "src/protozero/proto_utils_unittest.cc",
+    "src/protozero/scattered_stream_delegate_for_testing.cc",
     "src/protozero/scattered_stream_null_delegate.cc",
     "src/protozero/scattered_stream_writer.cc",
     "src/protozero/scattered_stream_writer_unittest.cc",