Convert fbandroid/libraries/fresco/drawee/src/m/j/c/f/drawee/drawable/DrawableParent to Kotlin

Reviewed By: kartavya-ramnani

Differential Revision: D62498402

fbshipit-source-id: 2e58ff29953cf52abda9e3182adc3e585963e905

Author: steelrooter

drawee/src/main/java/com/facebook/drawee/drawable/ArrayDrawable.java

@@ -303,16 +303,15 @@ public DrawableParent getDrawableParentForIndex(int index) {
 
   private DrawableParent createDrawableParentForIndex(final int index) {
     return new DrawableParent() {
+      @Nullable
       @Override
-      // NULLSAFE_FIXME[Inconsistent Subclass Parameter Annotation]
-      public Drawable setDrawable(Drawable newDrawable) {
-        // NULLSAFE_FIXME[Return Not Nullable]
+      public Drawable setDrawable(@Nullable Drawable newDrawable) {
         return ArrayDrawable.this.setDrawable(index, newDrawable);
       }
 
+      @Nullable
       @Override
       public Drawable getDrawable() {
-        // NULLSAFE_FIXME[Return Not Nullable]
         return ArrayDrawable.this.getDrawable(index);
       }
     };

…book/drawee/drawable/DrawableParent.java …cebook/drawee/drawable/DrawableParent.ktdrawee/src/main/java/com/facebook/drawee/drawable/DrawableParent.java renamed to drawee/src/main/java/com/facebook/drawee/drawable/DrawableParent.kt drawee/src/main/java/com/facebook/drawee/drawable/DrawableParent.java renamed to drawee/src/main/java/com/facebook/drawee/drawable/DrawableParent.kt

@@ -5,30 +5,25 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-package com.facebook.drawee.drawable;
+package com.facebook.drawee.drawable
 
-import android.graphics.drawable.Drawable;
-import com.facebook.infer.annotation.Nullsafe;
-import javax.annotation.Nullable;
+import android.graphics.drawable.Drawable
 
 /** A drawable parent that has a single child. */
-@Nullsafe(Nullsafe.Mode.LOCAL)
-public interface DrawableParent {
+interface DrawableParent {
 
   /**
    * Sets the new child drawable.
    *
    * @param newDrawable a new child drawable to set
    * @return the old child drawable
    */
-  @Nullable
-  Drawable setDrawable(@Nullable Drawable newDrawable);
+  fun setDrawable(newDrawable: Drawable?): Drawable?
 
   /**
    * Gets the child drawable.
    *
    * @return the current child drawable
    */
-  @Nullable
-  Drawable getDrawable();
+  val drawable: Drawable?
 }