Update from https://crrev.com/308331

cc/output/shader.cc

 // Copyright 2011 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/output/shader.h"
 
 #include <algorithm>
 
 #include "base/basictypes.h"
 #include "base/logging.h"
@@ skipping 677 matching lines @@
   if (shader_string.find("ApplyBlendMode") == std::string::npos)
     return shader_string;
 
   if (!has_blend_mode()) {
     return "#define ApplyBlendMode(X) (X)\n" + shader_string;
   }
 
   // clang-format off
   static const std::string kFunctionApplyBlendMode = SHADER0(
       // clang-format on
-      uniform SamplerType s_backdropTexture;
+      uniform sampler2D s_backdropTexture;
       uniform TexCoordPrecision vec4 backdropRect;
 
       vec4 GetBackdropColor() {
         TexCoordPrecision vec2 bgTexCoord = gl_FragCoord.xy - backdropRect.xy;
         bgTexCoord.x /= backdropRect.z;
         bgTexCoord.y /= backdropRect.w;
-        return TextureLookup(s_backdropTexture, bgTexCoord);
+        return texture2D(s_backdropTexture, bgTexCoord);
       }
 
       vec4 ApplyBlendMode(vec4 src) {
         vec4 dst = GetBackdropColor();
         return Blend(src, dst);
       }
       // clang-format off
   );  // NOLINT(whitespace/parens)
   // clang-format on
 
@@ skipping 1268 matching lines @@
         vec2 coord = mod(floor(texCoord * frequency * 2.0), 2.0);
         float picker = abs(coord.x - coord.y);  // NOLINT
         gl_FragColor = mix(color1, color2, picker) * alpha;
       }
       // clang-format off
   );  // NOLINT(whitespace/parens)
   // clang-format on
 }
 
 }  // namespace cc