Implement java bindings for custom baseline function

Summary: Implement java bindings for custom baseline function

Differential Revision: D4392516

fbshipit-source-id: 39cf6066f8e5982268becd87e54c9ab51fbf7a90

java/com/facebook/yoga/YogaBaselineFunction.java

@@ -0,0 +1,22 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+package com.facebook.yoga;
+
+import com.facebook.proguard.annotations.DoNotStrip;
+
+@DoNotStrip
+public interface YogaBaselineFunction {
+  /**
+   * Return the baseline of the node in pixels. When no baseline function is set the baseline
+   * default to the computed height of the node.
+   */
+  @DoNotStrip
+  float baseline(YogaNodeAPI node, float width, float height);
+}