| Index: components/cronet/android/api/src/org/chromium/net/ExperimentalBidirectionalStream.java
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| diff --git a/components/cronet/android/api/src/org/chromium/net/ExperimentalBidirectionalStream.java b/components/cronet/android/api/src/org/chromium/net/ExperimentalBidirectionalStream.java
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| index 26f2e6fa7951921e10e530097c60968028ffb393..5be350c06bdf31772ead3b03d5c98fe647670f55 100644
 | 
| --- a/components/cronet/android/api/src/org/chromium/net/ExperimentalBidirectionalStream.java
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| +++ b/components/cronet/android/api/src/org/chromium/net/ExperimentalBidirectionalStream.java
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| @@ -28,7 +28,9 @@ public abstract class ExperimentalBidirectionalStream extends BidirectionalStrea
 | 
|           * {@link RequestFinishedInfo}.
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|           * @return the builder to facilitate chaining.
 | 
|           */
 | 
| -        public abstract Builder addRequestAnnotation(Object annotation);
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| +        public Builder addRequestAnnotation(Object annotation) {
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| +            return this;
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| +        }
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|  
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|          // To support method chaining, override superclass methods to return an
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|          // instance of this class instead of the parent.
 | 
| 
 |