feat(RecordRange): Set context for implicit receivers only

modules/change_detection/src/record.js

@@ -42,7 +42,7 @@ export class ProtoRecord {
               dest) {
 
     this.recordRange = recordRange;
-    this.mode = mode;
+    this._mode = mode;
     this.funcOrValue = funcOrValue;
     this.arity = arity;
     this.dest = dest;
@@ -52,6 +52,10 @@ export class ProtoRecord {
     // The concrete Record instantiated from this ProtoRecord
     this.recordInConstruction = null;
   }
+
+  setIsImplicitReceiver() {
+    this._mode |= RECORD_FLAG_IMPLICIT_RECEIVER;
+  }
 }
 
 
@@ -117,7 +121,7 @@ export class Record {
       return;
     }
 
-    this._mode = protoRecord.mode;
+    this._mode = protoRecord._mode;
 
     var type = this.type;
 
@@ -160,6 +164,10 @@ export class Record {
     }
   }
 
+  get isImplicitReceiver() {
+    return (this._mode & RECORD_FLAG_IMPLICIT_RECEIVER) === RECORD_FLAG_IMPLICIT_RECEIVER;
+  }
+
   static createMarker(rr:RecordRange) {
     return new Record(rr, null, null);
   }