Don't build trace_to_text when building in Chrome

Change-Id: I193ab1e64c5881caa58bf7c56a6758175548a11b
diff --git a/BUILD.gn b/BUILD.gn
index 27e23e7..6f8b7b2 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -29,7 +29,6 @@
     "src/ipc/protoc_plugin:ipc_plugin($host_toolchain)",
     "src/protozero/protoc_plugin($host_toolchain)",
     "tools/proto_to_cpp",
-    "tools/trace_to_text",
   ]
   if (is_linux || is_android) {
     deps += [ "tools/ftrace_proto_gen:ftrace_proto_gen" ]
@@ -39,6 +38,7 @@
       "protos/perfetto/config:merged_config",  # For syntax-checking the proto.
       "test/configs",
       "tools:protoc_helper",
+      "tools/trace_to_text",
     ]
     if (is_linux || is_android) {
       deps += [