Add support for vertex and geometry shader textures

src/gpu/vk/GrVkProgramBuilder.h

 /*
 * Copyright 2016 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
 #ifndef GrVkProgramBuilder_DEFINED
 #define GrVkProgramBuilder_DEFINED
 
@@ skipping 27 matching lines @@
     const GrCaps* caps() const override;
     const GrGLSLCaps* glslCaps() const override;
 
     GrVkGpu* gpu() const { return fGpu; }
 
     void finalizeFragmentOutputColor(GrGLSLShaderVar& outputColor) override;
 
 private:
     GrVkProgramBuilder(GrVkGpu*, const DrawArgs&);
 
-    void emitSamplers(const GrProcessor&,
-                      GrGLSLTextureSampler::TextureSamplerArray* outSamplers) override;
+    void nameSampler(int idx, SkString* name) override { name->printf("%d", idx); }
 
     GrVkProgram* finalize(const DrawArgs& args,
                           GrPrimitiveType primitiveType,
                           const GrVkRenderPass& renderPass);
 
     static bool CreateVkShaderModule(const GrVkGpu* gpu,
                                      VkShaderStageFlagBits stage,
                                      const GrGLSLShaderBuilder& builder,
                                      VkShaderModule* shaderModule,
                                      VkPipelineShaderStageCreateInfo* stageInfo);
 
     GrGLSLUniformHandler* uniformHandler() override { return &fUniformHandler; }
     const GrGLSLUniformHandler* uniformHandler() const override { return &fUniformHandler; }
     GrGLSLVaryingHandler* varyingHandler() override { return &fVaryingHandler; }
 
     GrVkGpu* fGpu;
     GrVkVaryingHandler        fVaryingHandler;
     GrVkUniformHandler        fUniformHandler;
 
     SkTArray<UniformHandle>   fSamplerUniforms;
 
     typedef GrGLSLProgramBuilder INHERITED;
 };
 
-#endif
+#endif