Add TODO to respect FLAG_ALLOW_GZIP in CronetDataSource

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=169927989

extensions/cronet/src/main/java/com/google/android/exoplayer2/ext/cronet/CronetDataSource.java

@@ -460,6 +460,12 @@ public class CronetDataSource extends UrlRequest.Callback implements HttpDataSou
       }
       requestBuilder.addHeader("Range", rangeValue.toString());
     }
+    // TODO: Uncomment when https://bugs.chromium.org/p/chromium/issues/detail?id=767025 is fixed
+    // (adjusting the code as necessary).
+    // Force identity encoding unless gzip is allowed.
+    // if (!dataSpec.isFlagSet(DataSpec.FLAG_ALLOW_GZIP)) {
+    //   requestBuilder.addHeader("Accept-Encoding", "identity");
+    // }
     // Set the method and (if non-empty) the body.
     if (dataSpec.postBody != null) {
       requestBuilder.setHttpMethod("POST");