Simplify adding attributes to GrGeometryProcessor
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2248323003

Review-Url: https://codereview.chromium.org/2248323003
diff --git a/src/gpu/batches/GrMSAAPathRenderer.cpp b/src/gpu/batches/GrMSAAPathRenderer.cpp
index 324a976..05a23a1 100644
--- a/src/gpu/batches/GrMSAAPathRenderer.cpp
+++ b/src/gpu/batches/GrMSAAPathRenderer.cpp
@@ -195,11 +195,10 @@
     MSAAQuadProcessor(const SkMatrix& viewMatrix)
         : fViewMatrix(viewMatrix) {
         this->initClassID<MSAAQuadProcessor>();
-        fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType,
-                                                       kHigh_GrSLPrecision));
-        fInUV = &this->addVertexAttrib(Attribute("inUV", kVec2f_GrVertexAttribType,
-                                                 kHigh_GrSLPrecision));
-        fInColor = &this->addVertexAttrib(Attribute("inColor", kVec4ub_GrVertexAttribType));
+        fInPosition = &this->addVertexAttrib("inPosition", kVec2f_GrVertexAttribType,
+                                             kHigh_GrSLPrecision);
+        fInUV = &this->addVertexAttrib("inUV", kVec2f_GrVertexAttribType, kHigh_GrSLPrecision);
+        fInColor = &this->addVertexAttrib("inColor", kVec4ub_GrVertexAttribType);
         this->setSampleShading(1.0f);
     }