Add support for RCTText under FlatUIImplementation

Summary: @public Initial version of FlatUIImplementation lacks any primitives support (such as RCTText, RCTImageView or RCTView). This diff add the first part, RCTText (alongside with RCTVirtualText and RCTRawText).

Reviewed By: sriramramani

Differential Revision: D2693348

ReactAndroid/src/main/java/com/facebook/react/flat/RCTTextManager.java

@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) 2015-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.react.flat;
+
+/**
+ * ViewManager that creates instances of RCTText.
+ */
+/* package */ final class RCTTextManager extends VirtualViewManager<RCTText> {
+
+  @Override
+  public String getName() {
+    return "RCTText";
+  }
+
+  @Override
+  public RCTText createShadowNodeInstance() {
+    return new RCTText();
+  }
+
+  @Override
+  public Class<RCTText> getShadowNodeClass() {
+    return RCTText.class;
+  }
+}