Pass reason for measure pass along with measurecallbackend event (#566)

Summary:
Pull Request resolved: https://github.com/facebook/litho/pull/566

Pull Request resolved: https://github.com/facebook/react-native/pull/25702

Pass reason for each measure callback to the flipper plugin

Reviewed By: davidaurelio

Differential Revision: D16221771

fbshipit-source-id: 2e72e1ebb3c7e633d189e7a7a81d655ac9531e51

java/com/facebook/yoga/LayoutPassReason.java

@@ -0,0 +1,40 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the LICENSE
+ * file in the root directory of this source tree.
+ */
+package com.facebook.yoga;
+
+public enum LayoutPassReason {
+  INITIAL(0),
+  MEASURE(1),
+  ABS_MEASURE(2),
+  FLEX(3),
+  ABS_LAYOUT(4),
+  STRETCH(5),
+  MULTILINE_STRETCH(6);
+
+  private final int mIntValue;
+
+  LayoutPassReason(int intValue) {
+    mIntValue = intValue;
+  }
+
+  public int intValue() {
+    return mIntValue;
+  }
+
+  public static LayoutPassReason fromInt(int value) {
+    switch (value) {
+      case 0: return INITIAL;
+      case 1: return MEASURE;
+      case 2: return ABS_MEASURE;
+      case 3: return FLEX;
+      case 4: return ABS_LAYOUT;
+      case 5: return STRETCH;
+      case 6: return MULTILINE_STRETCH;
+      default: throw new IllegalArgumentException("Unknown enum value: " + value);
+    }
+  }
+}