Color adjustment test for running on perf bots.

cc/output/shader.cc

Index: cc/output/shader.cc
diff --git a/cc/output/shader.cc b/cc/output/shader.cc
index 75cac6cbfd61f1c35250ab96e70b822eb621a04a..931c9aec54c980f5112249336d1c3d44fc3abe31 100644
--- a/cc/output/shader.cc
+++ b/cc/output/shader.cc
@@ -2087,6 +2087,13 @@ std::string FragmentShaderYUVVideo::GetShaderBody() {
       float v_unsigned = TextureLookup(v_texture, uv_clamped).x;
       vec3 yuv = vec3(y_raw, u_unsigned, v_unsigned) + yuv_adj;
       vec3 rgb = yuv_matrix * yuv;
+      rgb = mix(rgb/4.5,
+                pow((rgb + vec3(0.0999, 0.0999, 0.0999)) / 1.099,
+                    vec3(1.0/0.45, 1.0/0.45, 1.0/0.45)),
+                step(0.081, rgb));
+      rgb = mix(rgb * 12.92,
+                pow(rgb, vec3(1.0/2.4, 1.0/2.4, 1.0/2.4)) * 1.055 - vec3(0.055, 0.055, 0.055),
+                step(0.0031308, rgb));
       gl_FragColor = vec4(rgb, 1.0) * alpha;
     }
   });