Style bikeshed - remove extraneous whitespace

GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1842753002

Review URL: https://codereview.chromium.org/1842753002
diff --git a/src/gpu/effects/GrTextureDomain.cpp b/src/gpu/effects/GrTextureDomain.cpp
index 77ce39e..d3850a3 100644
--- a/src/gpu/effects/GrTextureDomain.cpp
+++ b/src/gpu/effects/GrTextureDomain.cpp
@@ -102,7 +102,7 @@
                 builder->appendTextureLookupAndModulate(inModulateColor, sampler,
                                                           inCoords.c_str());
                 builder->codeAppend(";");
-                
+
                 builder->codeAppend(GrGLSLShaderVar::PrecisionString(glslCaps,
                                                                      kHigh_GrSLPrecision));
                 builder->codeAppendf("float x = (%s).x;", inCoords.c_str());