Add a way to provide target nodes in Android (tensorflow#14722)

* Add a way to provide target nodes in Android

This is required when running some models as a step for initializing the graph etc.

* Fix enableStats mistake on overload

Falsely passed enableStats as false instead of the parameter for the non overloaded version.

Author: YoniTsafir

tensorflow/contrib/android/java/org/tensorflow/contrib/android/TensorFlowInferenceInterface.java

@@ -194,6 +194,13 @@ public void run(String[] outputNames) {
    * @param outputNames A list of output nodes which should be filled by the inference pass.
    */
   public void run(String[] outputNames, boolean enableStats) {
+    run(outputNames, enableStats, new String[] {});
+  }
+
+  /**
+   * An overloaded version of runInference that allows supplying targetNodeNames as well
+   */
+  public void run(String[] outputNames, boolean enableStats, String[] targetNodeNames) {
     // Release any Tensors from the previous run calls.
     closeFetches();
 
@@ -204,6 +211,11 @@ public void run(String[] outputNames, boolean enableStats) {
       runner.fetch(tid.name, tid.outputIndex);
     }
 
+	// Add targets.
+    for (String t : targetNodeNames) {
+      runner.addTarget(t);
+    }
+
     // Run the session.
     try {
       if (enableStats) {