Set barriers and image layout changes between mipmap blits.

src/gpu/vk/GrVkImage.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 GrVkImage_DEFINED
 #define GrVkImage_DEFINED
 
@@ skipping 74 matching lines @@
     }
 
     VkImageLayout currentLayout() const { return fCurrentLayout; }
 
     void setImageLayout(const GrVkGpu* gpu,
                         VkImageLayout newLayout,
                         VkAccessFlags srcAccessMask,
                         VkAccessFlags dstAccessMask,
                         VkPipelineStageFlags srcStageMask,
                         VkPipelineStageFlags dstStageMask,
+                        bool byRegion) {
+        this->setImageLayout(gpu, newLayout, srcAccessMask, dstAccessMask,
+                             srcStageMask, dstStageMask, 0, fResource->fLevelCount, byRegion);
+    }
+
+    void setImageLayout(const GrVkGpu* gpu,
+                        VkImageLayout newLayout,
+                        VkAccessFlags srcAccessMask,
+                        VkAccessFlags dstAccessMask,
+                        VkPipelineStageFlags srcStageMask,
+                        VkPipelineStageFlags dstStageMask,
+                        uint32_t baseMipLevel,
+                        uint32_t levelCount,
                         bool byRegion);
 
     struct ImageDesc {
         VkImageType         fImageType;
         VkFormat            fFormat;
         uint32_t            fWidth;
         uint32_t            fHeight;
         uint32_t            fLevels;
         uint32_t            fSamples;
         VkImageTiling       fImageTiling;
@@ skipping 18 matching lines @@
 
     void releaseImage(const GrVkGpu* gpu);
     void abandonImage();
 
     const Resource* fResource;
 
     VkImageLayout   fCurrentLayout;
 };
 
 #endif