j422 now uses j420 source code so increase error threshold to match.

unit_test/color_test.cc

 /*
  *  Copyright 2015 The LibYuv Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS. All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 128 matching lines @@
   free_aligned_buffer_page_end(temp_y);                                        \
   free_aligned_buffer_page_end(temp_u);                                        \
   free_aligned_buffer_page_end(temp_v);                                        \
   free_aligned_buffer_page_end(dst_pixels_opt);                                \
   free_aligned_buffer_page_end(dst_pixels_c);                                  \
 }                                                                              \
 
 TESTCS(TestI420, I420ToARGB, ARGBToI420, 1, 2, benchmark_width_, ERROR_FULL)
 TESTCS(TestI422, I422ToARGB, ARGBToI422, 0, 1, 0, ERROR_FULL)
 TESTCS(TestJ420, J420ToARGB, ARGBToJ420, 1, 2, benchmark_width_, ERROR_J420)
-TESTCS(TestJ422, J422ToARGB, ARGBToJ422, 0, 1, 0, 3)
+TESTCS(TestJ422, J422ToARGB, ARGBToJ422, 0, 1, 0, ERROR_J420)
 
 static void YUVToRGB(int y, int u, int v, int* r, int* g, int* b) {
   const int kWidth = 16;
   const int kHeight = 1;
   const int kPixels = kWidth * kHeight;
   const int kHalfPixels = ((kWidth + 1) / 2) * ((kHeight + 1) / 2);
 
   SIMD_ALIGNED(uint8 orig_y[16]);
   SIMD_ALIGNED(uint8 orig_u[8]);
   SIMD_ALIGNED(uint8 orig_v[8]);
@@ skipping 401 matching lines @@
     EXPECT_EQ(r0, r1);
     EXPECT_EQ(g0, g1);
     EXPECT_EQ(b0, b1);
     EXPECT_EQ(r0, r2);
     EXPECT_EQ(g0, g2);
     EXPECT_EQ(b0, b2);
   }
 }
 
 }  // namespace libyuv