Add resource tracking output and command buffer recycling

src/gpu/vk/GrVkPipeline.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 GrVkPipeline_DEFINED
 #define GrVkPipeline_DEFINED
 
@@ skipping 19 matching lines @@
                                 int shaderStageCount,
                                 GrPrimitiveType primitiveType,
                                 const GrVkRenderPass& renderPass,
                                 VkPipelineLayout layout,
                                 VkPipelineCache cache);
 
     VkPipeline pipeline() const { return fPipeline; }
 
     static void SetDynamicState(GrVkGpu*, GrVkCommandBuffer*, const GrPipeline&);
 
+#ifdef SK_TRACE_VK_RESOURCES
+    void dumpInfo() const override {
+        SkDebugf("GrVkPipeline: %d (%d refs)\n", fPipeline, this->getRefCnt());
+    }
+#endif
 
 private:
     GrVkPipeline(VkPipeline pipeline) : INHERITED(), fPipeline(pipeline) {}
 
     GrVkPipeline(const GrVkPipeline&);
     GrVkPipeline& operator=(const GrVkPipeline&);
 
     void freeGPUData(const GrVkGpu* gpu) const override;
 
     VkPipeline  fPipeline;
 
     typedef GrVkResource INHERITED;
 };
 
 #endif