Revert of Add ETC1 powered SSE encoder for tile texture compression

cc/resources/texture_compressor_etc1_unittest.cc

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "cc/resources/texture_compressor.h"
-
-#include "cc/base/util.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace cc {
-namespace {
-
-const int kImageWidth = 256;
-const int kImageHeight = 256;
-const int kImageChannels = 4;
-const int kImageSizeInBytes = kImageWidth * kImageHeight * kImageChannels;
-
-TEST(TextureCompressorETC1Test, Compress256x256Ratio) {
-  scoped_ptr<TextureCompressor> compressor =
-      TextureCompressor::Create(TextureCompressor::kFormatETC1);
-  uint8_t src[kImageSizeInBytes];
-  uint8_t dst[kImageSizeInBytes];
-  const unsigned int kImagePoison = 0xDEADBEEF;
-
-  // Poison destination bytes so we can see how much has been
-  // overwritten by compression algorithm.
-  uint32_t* dst_32 = reinterpret_cast<uint32_t*>(dst);
-  for (int i = 0; i < kImageWidth * kImageHeight; i++) {
-    dst_32[i] = kImagePoison;
-  }
-
-  // Generate test texture.
-  for (int i = 0; i < kImageSizeInBytes; i++) {
-    src[i] = i % 256;
-  }
-
-  compressor->Compress(src, dst, kImageWidth, kImageHeight,
-                       TextureCompressor::kQualityLow);
-
-  int compressed_size = 0;
-  for (compressed_size = 0; compressed_size < kImageWidth * kImageHeight;
-       compressed_size++) {
-    if (dst_32[compressed_size] == kImagePoison) {
-      // Represents size in bytes of the compressed block.
-      compressed_size = compressed_size * 4;
-      break;
-    }
-  }
-
-  // Check if compression ratio is 8:1 for RGBA or BGRA images, after discarding
-  // alpha channel.
-  EXPECT_EQ(kImageSizeInBytes, compressed_size * 8);
-}
-
-}  // namespace
-}  // namespace cc