@Override
  protected int getBucketedSizeForValue(Bitmap value) {
    Preconditions.checkNotNull(value);
    return value.getAllocationByteCount();
  }
Gets the bucketed size of the value. We don't check the 'validity' of the value (beyond the
not-null check). That's handled in {@link #isReusable(Bitmap)}

@param value the value
@return bucketed size of the value
imagepipeline/src/main/java/com/facebook/imagepipeline/memory/BucketsBitmapPool.java