Initial version of external_oes texture support and unit test

src/gpu/glsl/GrGLSLTextureSampler.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLSLTextureSampler_DEFINED
 #define GrGLSLTextureSampler_DEFINED
 
@@ skipping 10 matching lines @@
         : fSamplerUniform(uniform)
         , fConfig(access.getTexture()->config()) {
         SkASSERT(kUnknown_GrPixelConfig != fConfig);
         memcpy(fSwizzle, access.getSwizzle(), 5);
     }
 
     GrPixelConfig config() const { return fConfig; }
     // this is .abcd
     const char* swizzle() const { return fSwizzle; }
 
+    GrSLType samplerType() const { return fSamplerType; }
+
 private:
+    GrSLType      fSamplerType;

[egdaniel, 2015/11/20 21:57:43]

do you set fSampleType anywhere? 

[bsalomon, 2015/11/20 22:43:55]

woops, this was an old way of doing things, removed member and getter.

     UniformHandle fSamplerUniform;
     GrPixelConfig fConfig;
     char          fSwizzle[5];
 
     friend class GrGLSLShaderBuilder;
 };
 
 #endif