Dead code elimination: scythe.chrome_functions:segment.path %media% edition, round 1.

media/base/simd/convert_rgb_to_yuv_unittest.cc

Index: media/base/simd/convert_rgb_to_yuv_unittest.cc
diff --git a/media/base/simd/convert_rgb_to_yuv_unittest.cc b/media/base/simd/convert_rgb_to_yuv_unittest.cc
index 020fb257464175c9efaa78f936b9fe46cfae46ec..08aa4dfb42ae3b6ab20722869c488274356b4a64 100644
--- a/media/base/simd/convert_rgb_to_yuv_unittest.cc
+++ b/media/base/simd/convert_rgb_to_yuv_unittest.cc
@@ -16,28 +16,14 @@ int ConvertRGBToY(const uint8* rgb) {
   return std::max(0, std::min(255, y));
 }
 
-int ConvertRGBToU(const uint8* rgb, int size, bool subsampling) {
-  int u = 0;
-  if (!subsampling) {
-    u = 112 * rgb[0] - 74 * rgb[1] - 38 * rgb[2];
-  } else {
-    int u0 = 112 * rgb[0] - 74 * rgb[1] - 38 * rgb[2];
-    int u1 = 112 * rgb[size] - 74 * rgb[size + 1] - 38 * rgb[size + 2];
-    u = (u0 + u1 + 1) / 2;
-  }
+int ConvertRGBToU(const uint8* rgb, int size) {
+  int u = 112 * rgb[0] - 74 * rgb[1] - 38 * rgb[2];
   u = ((u + 128) >> 8) + 128;
   return std::max(0, std::min(255, u));
 }
 
-int ConvertRGBToV(const uint8* rgb, int size, bool subsampling) {
-  int v = 0;
-  if (!subsampling) {
-    v = -18 * rgb[0] - 94 * rgb[1] + 112 * rgb[2];
-  } else {
-    int v0 = -18 * rgb[0] - 94 * rgb[1] + 112 * rgb[2];
-    int v1 = -18 * rgb[size] - 94 * rgb[size + 1] + 112 * rgb[size + 2];
-    v = (v0 + v1 + 1) / 2;
-  }
+int ConvertRGBToV(const uint8* rgb, int size) {
+  int v = -18 * rgb[0] - 94 * rgb[1] + 112 * rgb[2];
   v = ((v + 128) >> 8) + 128;
   return std::max(0, std::min(255, v));
 }
@@ -61,12 +47,6 @@ TEST(YUVConvertTest, SideBySideRGB) {
   const int kStep = 8;
   const int kWidth = 256 / kStep;
 
-#ifdef ENABLE_SUBSAMPLING
-  const bool kSubsampling = true;
-#else
-  const bool kSubsampling = false;
-#endif
-
   for (int size = 3; size <= 4; ++size) {
     // Create the output buffers.
     scoped_array<uint8> rgb(new uint8[kWidth * size]);
@@ -109,14 +89,14 @@ TEST(YUVConvertTest, SideBySideRGB) {
         // Check the output U pixels.
         for (int i = 0; i < kWidth / 2; ++i) {
           const uint8* p = &rgb[i * 2 * size];
-          int error = ConvertRGBToU(p, size, kSubsampling) - u[i];
+          int error = ConvertRGBToU(p, size) - u[i];
           total_error += error > 0 ? error : -error;
         }
 
         // Check the output V pixels.
         for (int i = 0; i < kWidth / 2; ++i) {
           const uint8* p = &rgb[i * 2 * size];
-          int error = ConvertRGBToV(p, size, kSubsampling) - v[i];
+          int error = ConvertRGBToV(p, size) - v[i];
           total_error += error > 0 ? error : -error;
         }
       }