Introducing ReactCallerContextFactory interface

Summary:
This interface is used from ReactImageManager to customize the CallerContext object associated with each instance of ReactImageView.
CallerContext are used on Fresco to customize Debug and logs

Changelog: Introduce ReactCallerContextFactory interface, this interface is intended to customize Debug and logging on Fresco

Reviewed By: JoshuaGross

Differential Revision: D18474017

fbshipit-source-id: eda0fc9d3f64bbcc23ee1b7f5d779b441da1fe6c

Author: mdvacca

ReactAndroid/src/main/java/com/facebook/react/views/image/ReactCallerContextFactory.java

@@ -0,0 +1,25 @@
+/*
+ * 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.react.views.image;
+
+import com.facebook.react.uimanager.ThemedReactContext;
+
+/**
+ * This interface is used from {@link ReactImageManager} to customize the CallerContext object
+ * associated with each instance of {@link ReactImageView}.
+ */
+public interface ReactCallerContextFactory {
+
+  /**
+   * This method will be called at the time {@link ReactImageManager} creates {@link ReactImageView}
+   *
+   * @param reactContext {@link ThemedReactContext} used to create the {@link ReactImageView}
+   * @return an {@link Object} that represents the CallerContext.
+   */
+  Object getOrCreateCallerContext(ThemedReactContext reactContext);
+}