Fix incorrect Rec601 YUV conversion matrix coefficient.

src/gpu/effects/GrYUVtoRGBEffect.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gl/builders/GrGLProgramBuilder.h"
 #include "GrYUVtoRGBEffect.h"
 
@@ skipping 114 matching lines @@
 
     typedef GrEffect INHERITED;
 };
 
 const GrGLfloat YUVtoRGBEffect::GLEffect::kJPEGConversionMatrix[16] = {
     1.0f,  0.0f,      1.402f,  -0.701f,
     1.0f, -0.34414f, -0.71414f, 0.529f,
     1.0f,  1.772f,    0.0f,    -0.886f,
     0.0f,  0.0f,      0.0f,     1.0};
 const GrGLfloat YUVtoRGBEffect::GLEffect::kRec601ConversionMatrix[16] = {
-    1.164f,  0.0f,    1.596f, -1.08175f,
-    1.164f, -0.391f, -0.813f,  0.529f,
+    1.164f,  0.0f,    1.596f, -0.87075f,
+    1.164f, -0.391f, -0.813f,  0.52925f,
     1.164f,  2.018f,  0.0f,   -1.08175f,
     0.0f,    0.0f,    0.0f,    1.0};
 }
 
 //////////////////////////////////////////////////////////////////////////////
 
 GrEffect* GrYUVtoRGBEffect::Create(GrTexture* yTexture, GrTexture* uTexture, GrTexture* vTexture,
                                    SkYUVColorSpace colorSpace) {
     return YUVtoRGBEffect::Create(yTexture, uTexture, vTexture, colorSpace);
 }