Move glsl onto EmitArgs struct for emitCode

src/effects/SkDisplacementMapEffect.cpp

Index: src/effects/SkDisplacementMapEffect.cpp
diff --git a/src/effects/SkDisplacementMapEffect.cpp b/src/effects/SkDisplacementMapEffect.cpp
index cd8b741d3d53162c7091d5398805170398b19608..77d6cb84aa69e2934d0b2c03e2aa7eac29b57aa3 100644
--- a/src/effects/SkDisplacementMapEffect.cpp
+++ b/src/effects/SkDisplacementMapEffect.cpp
@@ -608,7 +608,11 @@ void GrGLDisplacementMapEffect::emitCode(EmitArgs& args) {
     }
     fragBuilder->codeAppend("-vec2(0.5));\t\t");
 
-    fGLDomain.sampleTexture(fragBuilder, domain, args.fOutputColor, SkString(cCoords),
+    fGLDomain.sampleTexture(fragBuilder,
+                            args.fGLSLCaps,
+                            domain,
+                            args.fOutputColor,
+                            SkString(cCoords),
                             args.fSamplers[1]);
     fragBuilder->codeAppend(";\n");
 }