Add a cache of GrVkSamplers in GrVkResourceProvider.

src/gpu/vk/GrVkProgram.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 GrVkProgram_DEFINED
 #define GrVkProgram_DEFINED
@@ skipping 15 matching lines @@
 class GrVkUniformBuffer;
 
 class GrVkProgram : public SkRefCnt {
 public:
     typedef GrGLSLProgramBuilder::BuiltinUniformHandles BuiltinUniformHandles;
 
     ~GrVkProgram();
 
     GrVkPipeline* vkPipeline() const { return fPipeline; }
 
-    void setData(const GrVkGpu*, const GrPrimitiveProcessor&, const GrPipeline&);
+    void setData(GrVkGpu*, const GrPrimitiveProcessor&, const GrPipeline&);
 
     void bind(const GrVkGpu* gpu, GrVkCommandBuffer* commandBuffer);
 
     void addUniformResources(GrVkCommandBuffer&);
 
     void freeGPUResources(const GrVkGpu* gpu);
 
     // This releases resources the only a given instance of a GrVkProgram needs to hold onto and do
     // don't need to survive across new uses of the program.
     void freeTempResources(const GrVkGpu* gpu);
@@ skipping 14 matching lines @@
                 const UniformInfoArray& uniforms,
                 uint32_t vertexUniformSize,
                 uint32_t fragmentUniformSize,
                 uint32_t numSamplers,
                 GrGLSLPrimitiveProcessor* geometryProcessor,
                 GrGLSLXferProcessor* xferProcessor,
                 const GrGLSLFragProcs& fragmentProcessors);
 
     void writeUniformBuffers(const GrVkGpu* gpu);
 
-    void writeSamplers(const GrVkGpu* gpu, const SkTArray<const GrTextureAccess*>& textureBindings);
+    void writeSamplers(GrVkGpu* gpu, const SkTArray<const GrTextureAccess*>& textureBindings);
 
 
     /**
     * We use the RT's size and origin to adjust from Skia device space to OpenGL normalized device
     * space and to make device space positions have the correct origin for processors that require
     * them.
     */
     struct RenderTargetState {
         SkISize         fRenderTargetSize;
         GrSurfaceOrigin fRenderTargetOrigin;
@@ skipping 70 matching lines @@
     GrVkProgramDataManager fProgramDataManager;
 
 #ifdef SK_DEBUG
     int fNumSamplers;
 #endif
 
     friend class GrVkProgramBuilder;
 };
 
 #endif