[DO NOT MERGE] Dump SurfaceControl's layerId to proto

Test: Data appears in Winscope
Bug: 197712697
Change-Id: Ida47f5506a56b19902fcaafc644d1df34ce6c4a3
(cherry picked from commit 120ee45bd0)

core/java/android/view/SurfaceControl.java

@@ -23,6 +23,7 @@ import static android.graphics.Matrix.MSKEW_Y;
 import static android.graphics.Matrix.MTRANS_X;
 import static android.graphics.Matrix.MTRANS_Y;
 import static android.view.SurfaceControlProto.HASH_CODE;
+import static android.view.SurfaceControlProto.LAYER_ID;
 import static android.view.SurfaceControlProto.NAME;
 
 import android.annotation.FloatRange;
@@ -1540,6 +1541,7 @@ public final class SurfaceControl implements Parcelable {
         final long token = proto.start(fieldId);
         proto.write(HASH_CODE, System.identityHashCode(this));
         proto.write(NAME, mName);
+        proto.write(LAYER_ID, getLayerId());
         proto.end(token);
     }
 

core/proto/android/view/surfacecontrol.proto

@@ -29,4 +29,5 @@ message SurfaceControlProto {
 
     optional int32 hash_code = 1;
     optional string name = 2 [ (android.privacy).dest = DEST_EXPLICIT ];
+    optional int32 layerId = 3;
 }