Set up cache in vulkan to reuse GrVkPrograms (aka VkPipelines)

src/gpu/vk/GrVkCommandBuffer.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 GrVkCommandBuffer_DEFINED
 #define GrVkCommandBuffer_DEFINED
 
@@ skipping 65 matching lines @@
                                                               vkBuffer,
                                                               0,
                                                               VK_INDEX_TYPE_UINT16));
             fBoundIndexBufferIsValid = true;
             fBoundIndexBuffer = vkBuffer;
             addResource(ibuffer->resource());
         }
     }
 
     void bindDescriptorSets(const GrVkGpu* gpu,
-                            GrVkProgram*,
+                            GrVkPipelineState*,
                             VkPipelineLayout layout,
                             uint32_t firstSet,
                             uint32_t setCount,
                             const VkDescriptorSet* descriptorSets,
                             uint32_t dynamicOffsetCount,
                             const uint32_t* dynamicOffsets);
 
     void setViewport(const GrVkGpu* gpu,
                      uint32_t firstViewport,
                      uint32_t viewportCount,
@@ skipping 110 matching lines @@
 
     // Cached values used for dynamic state updates
     VkViewport fCachedViewport;
     VkRect2D   fCachedScissor;
     float      fCachedBlendConstant[4];
 };
 
 
 #endif