Implement NVPR on GLES

src/gpu/gl/GrGLProgramDesc.cpp

Index: src/gpu/gl/GrGLProgramDesc.cpp
diff --git a/src/gpu/gl/GrGLProgramDesc.cpp b/src/gpu/gl/GrGLProgramDesc.cpp
index 4039eaf95cd858ad4493606ced84007e31da550d..6d62ff92bec3262e04968b1d8e00b2404b165a40 100644
--- a/src/gpu/gl/GrGLProgramDesc.cpp
+++ b/src/gpu/gl/GrGLProgramDesc.cpp
@@ -113,9 +113,9 @@ void GrGLProgramDesc::Build(const GrDrawState& drawState,
     int currEffectKey = 0;
     bool readsDst = false;
     bool readFragPosition = false;
-    // We use vertexshader-less shader programs only when drawing paths.
-    bool hasVertexCode = !(GrGpu::kDrawPath_DrawType == drawType ||
-                           GrGpu::kDrawPaths_DrawType == drawType);
+
+    // Provide option for shader programs without vertex shader only when drawing paths.
+    bool hasVertexCode = !GrGpu::IsPathRenderingDrawType(drawType);
 
     if (!skipColor) {
         for (int s = firstEffectiveColorStage; s < drawState.numColorStages(); ++s) {