Revert of Provides multiple implementations of Android's SkBitmapRegionDecoder

src/utils/SkBitmapRegionSampler.h

Index: src/utils/SkBitmapRegionSampler.h
diff --git a/src/utils/SkBitmapRegionSampler.h b/src/utils/SkBitmapRegionSampler.h
deleted file mode 100644
index d2f738d3b5545d220c4d00cacf5f7ca855b30fd2..0000000000000000000000000000000000000000
--- a/src/utils/SkBitmapRegionSampler.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "SkBitmap.h"
-#include "SkBitmapRegionDecoderInterface.h"
-#include "SkImageDecoder.h"
-#include "SkTemplates.h"
-
-/*
- * This class aims to duplicate the current implementation of
- * SkBitmapRegionDecoder in Android.
- */
-class SkBitmapRegionSampler : public SkBitmapRegionDecoderInterface {
-public:
-
-    /*
-     * Takes ownership of pointer to decoder
-     */
-    SkBitmapRegionSampler(SkImageDecoder* decoder, int width, int height);
-
-    /*
-     * Three differences from the Android version:
-     *     Returns a Skia bitmap instead of an Android bitmap.
-     *     Android version attempts to reuse a recycled bitmap.
-     *     Removed the options object and used parameters for color type and
-     *     sample size.
-     */
-    SkBitmap* decodeRegion(int start_x, int start_y, int width, int height,
-                           int sampleSize, SkColorType prefColorType) override;
-
-private:
-
-    SkAutoTDelete<SkImageDecoder> fDecoder;
-
-    typedef SkBitmapRegionDecoderInterface INHERITED;
-
-};