Simplify GrGLPathRendering interface

src/gpu/gl/GrGpuGL.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGpuGL_DEFINED
 #define GrGpuGL_DEFINED
 
@@ skipping 33 matching lines @@
         return static_cast<GrGLPathRendering*>(pathRendering());
     }
 
     virtual void discard(GrRenderTarget*) SK_OVERRIDE;
 
     // Used by GrGLProgram and GrGLPathTexGenProgramEffects to configure OpenGL
     // state.
     void bindTexture(int unitIdx, const GrTextureParams& params, GrGLTexture* texture);
 
     bool shouldUseFixedFunctionTexturing() const {
+        // At the moment non-fixed-function texturing is not implemented
+        // even though the GrGLPathRendering would support it. Thus just
+        // return the below.
         return this->glCaps().pathRenderingSupport();
     }
 
     bool programUnitTest(int maxStages);
 
     // GrGpu overrides
     virtual GrPixelConfig preferredReadPixelsConfig(GrPixelConfig readConfig,
                                                     GrPixelConfig surfaceConfig) const SK_OVERRIDE;
     virtual GrPixelConfig preferredWritePixelsConfig(GrPixelConfig writeConfig,
                                                      GrPixelConfig surfaceConfig) const SK_OVERRIDE;
@@ skipping 375 matching lines @@
 
     // we record what stencil format worked last time to hopefully exit early
     // from our loop that tries stencil formats and calls check fb status.
     int fLastSuccessfulStencilFmtIdx;
 
     typedef GrGpu INHERITED;
     friend class GrGLPathRendering; // For accessing setTextureUnit.
 };
 
 #endif