Add resource tracking output and command buffer recycling

src/gpu/vk/GrVkFramebuffer.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 GrVkFramebuffer_DEFINED
 #define GrVkFramebuffer_DEFINED
 
@@ skipping 11 matching lines @@
 public:
     static GrVkFramebuffer* Create(GrVkGpu* gpu,
                                    int width, int height,
                                    const GrVkRenderPass* renderPass,
                                    const GrVkImageView* colorAttachment,
                                    const GrVkImageView* resolveAttachment,
                                    const GrVkImageView* stencilAttachment);
 
     VkFramebuffer framebuffer() const { return fFramebuffer; }
 
+#ifdef SK_TRACE_VK_RESOURCES
+    void dumpInfo() const override {
+        SkDebugf("GrVkFramebuffer: %d (%d refs)\n", fFramebuffer, this->getRefCnt());
+    }
+#endif
+
 private:
     GrVkFramebuffer(VkFramebuffer framebuffer) : INHERITED(), fFramebuffer(framebuffer) {}
 
     GrVkFramebuffer(const GrVkFramebuffer&);
     GrVkFramebuffer& operator=(const GrVkFramebuffer&);
 
     void freeGPUData(const GrVkGpu* gpu) const override;
 
     VkFramebuffer  fFramebuffer;
 
     typedef GrVkResource INHERITED;
 };
 
 #endif