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 e1a319104d1d66b2b215cab22fc5457170ef00ac..90365f768bd81f5df18a075174175982a027e828 100644
--- a/src/gpu/gl/GrGLProgramDesc.cpp
+++ b/src/gpu/gl/GrGLProgramDesc.cpp
@@ -102,9 +102,10 @@ bool GrGLProgramDesc::Build(const GrDrawState& drawState,
 
     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);
+
     int numStages = 0;
     if (!skipColor) {
         numStages += drawState.numColorStages() - firstEffectiveColorStage;
@@ -118,7 +119,6 @@ bool GrGLProgramDesc::Build(const GrDrawState& drawState,
     desc->fKey.push_back_n(kEffectKeyOffsetsAndLengthOffset + 2 * sizeof(uint16_t) * numStages);
 
     int offsetAndSizeIndex = 0;
-
     bool effectKeySuccess = true;
     if (!skipColor) {
         for (int s = firstEffectiveColorStage; s < drawState.numColorStages(); ++s) {