[Cronet] Move setExperimentalOptions() to ExperimentalCronetEngine.Builder

components/cronet/android/api/src/org/chromium/net/ExperimentalCronetEngine.java

Index: components/cronet/android/api/src/org/chromium/net/ExperimentalCronetEngine.java
diff --git a/components/cronet/android/api/src/org/chromium/net/ExperimentalCronetEngine.java b/components/cronet/android/api/src/org/chromium/net/ExperimentalCronetEngine.java
index ba4efa7942aa3c51e69d3764b355f30c9e371864..6fc67f4e5dca45fe487bb39ffeebecf393797967 100644
--- a/components/cronet/android/api/src/org/chromium/net/ExperimentalCronetEngine.java
+++ b/components/cronet/android/api/src/org/chromium/net/ExperimentalCronetEngine.java
@@ -170,6 +170,17 @@ public abstract class ExperimentalCronetEngine extends CronetEngine {
             return this;
         }
 
+        /**
+         * Sets experimental options to be used in Cronet.
+         *
+         * @param options JSON formatted experimental options.
+         * @return the builder to facilitate chaining.
+         */
+        public Builder setExperimentalOptions(String options) {
+            mBuilderDelegate.setExperimentalOptions(options);
+            return this;
+        }
+
         @VisibleForTesting
         ICronetEngineBuilder getBuilderDelegate() {
             return mBuilderDelegate;
@@ -240,12 +251,6 @@ public abstract class ExperimentalCronetEngine extends CronetEngine {
         }
 
         @Override
-        public Builder setExperimentalOptions(String options) {
-            super.setExperimentalOptions(options);
-            return this;
-        }
-
-        @Override
         public ExperimentalCronetEngine build() {
             return mBuilderDelegate.build();
         }