Change GrGLProgramDesc header to have DoPathRendering flag instead of RequiresVertexShader

src/gpu/gl/builders/GrGLProgramBuilder.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gl/GrGLProgram.h"
 #include "gl/GrGLSLPrettyPrint.h"
 #include "gl/GrGLUniformHandle.h"
@@ skipping 66 matching lines @@
         return false;
     }
 
     return true;
 }
 
 //////////////////////////////////////////////////////////////////////////////
 
 GrGLProgramBuilder::GrGLProgramBuilder(GrGpuGL* gpu,
                                        const GrGLProgramDesc& desc)
-    : fFragOnly(!desc.getHeader().fRequiresVertexShader &&
-                gpu->glCaps().pathRenderingSupport() &&
-                gpu->glPathRendering()->texturingMode() == GrGLPathRendering::FixedFunction_TexturingMode)
+    : fFragOnly(SkToBool(desc.getHeader().fUseFragShaderOnly))
     , fTexCoordSetCnt(0)
     , fProgramID(0)
     , fFS(this, desc)
     , fSeparableVaryingInfos(kVarsPerBlock)
     , fDesc(desc)
     , fGpu(gpu)
     , fUniforms(kVarsPerBlock) {
 }
 
 void GrGLProgramBuilder::nameVariable(SkString* out, char prefix, const char* name) {
@@ skipping 219 matching lines @@
                     GetProgramResourceLocation(programId,
                                                GR_GL_FRAGMENT_INPUT,
                                                fSeparableVaryingInfos[i].fVariable.c_str()));
         fSeparableVaryingInfos[i].fLocation = location;
     }
 }
 
 const GrGLContextInfo& GrGLProgramBuilder::ctxInfo() const {
     return fGpu->ctxInfo();
 }