Include zero_copy_stream_impl in protobuf_lite

This is what is done upstream[0].

[0] https://github.com/protocolbuffers/protobuf/blob/909a0f3/BUILD#L147

Bug: 70570
Change-Id: I29dce259d13457c9c4bcbfcfc6936fc759154ee5
diff --git a/BUILD.gn b/BUILD.gn
index 9f9adcb..b0b2d60 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -99,6 +99,8 @@
   "src/google/protobuf/io/strtod.h",
   "src/google/protobuf/io/zero_copy_stream.cc",
   "src/google/protobuf/io/zero_copy_stream.h",
+  "src/google/protobuf/io/zero_copy_stream_impl.cc",
+  "src/google/protobuf/io/zero_copy_stream_impl.h",
   "src/google/protobuf/io/zero_copy_stream_impl_lite.cc",
   "src/google/protobuf/io/zero_copy_stream_impl_lite.h",
   "src/google/protobuf/map.cc",
@@ -214,8 +216,6 @@
               "src/google/protobuf/io/printer.h",
               "src/google/protobuf/io/tokenizer.cc",
               "src/google/protobuf/io/tokenizer.h",
-              "src/google/protobuf/io/zero_copy_stream_impl.cc",
-              "src/google/protobuf/io/zero_copy_stream_impl.h",
               "src/google/protobuf/map_entry.h",
               "src/google/protobuf/map_field.cc",
               "src/google/protobuf/map_field.h",