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base/android/java/src/org/chromium/base/Promise.java

Index: base/android/java/src/org/chromium/base/Promise.java
diff --git a/base/android/java/src/org/chromium/base/Promise.java b/base/android/java/src/org/chromium/base/Promise.java
index c3e493aa9ad226a83aa06daadd2bb0d1afd6ac61..edb01eda871a4ea728e5b7c43cc9666921e96939 100644
--- a/base/android/java/src/org/chromium/base/Promise.java
+++ b/base/android/java/src/org/chromium/base/Promise.java
@@ -126,6 +126,18 @@ public class Promise<T> {
         exceptInner(onReject);
     }
 
+    /**
+     * A convenience method that returns a Callback that fulfills this Promise with its result.
+     */
+    public Callback<T> fulfillmentCallback() {
+        return new Callback<T>() {
+            @Override
+            public void onResult(T result) {
+                fulfill(result);
+            }
+        };
+    }
+
     private void thenInner(Callback<T> onFulfill) {
         if (mState == FULFILLED) {
             postCallbackToLooper(onFulfill, mResult);