SF: Track transaction tracing states in order

Need to preserve order when rebuilding layers
from the traces.

Test: TreeHugger
Bug: 200284593
Change-Id: Ie33f9c22f60d3bf3016b04b9b39dcfdb25165364
diff --git a/services/surfaceflinger/Tracing/TransactionProtoParser.cpp b/services/surfaceflinger/Tracing/TransactionProtoParser.cpp
index 7e12313..783b36e 100644
--- a/services/surfaceflinger/Tracing/TransactionProtoParser.cpp
+++ b/services/surfaceflinger/Tracing/TransactionProtoParser.cpp
@@ -43,7 +43,7 @@
 }
 
 proto::TransactionState TransactionProtoParser::toProto(
-        const std::unordered_map<int32_t /* layerId */, TracingLayerState> states) {
+        const std::map<int32_t /* layerId */, TracingLayerState> states) {
     proto::TransactionState proto;
     for (auto& [layerId, state] : states) {
         proto::LayerState layerProto = toProto(state, nullptr);