Update RT views and framebuffer in vulkan after mipmaping

src/gpu/vk/GrVkTexture.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 GrVkTexture_DEFINED
 #define GrVkTexture_DEFINED
 
@@ skipping 14 matching lines @@
                                              GrWrapOwnership, const GrVkImageInfo*);
 
     ~GrVkTexture() override;
 
     GrBackendObject getTextureHandle() const override;
 
     void textureParamsModified() override {}
 
     const GrVkImageView* textureView(bool allowSRGB);
 
-    bool reallocForMipmap(const GrVkGpu* gpu, uint32_t mipLevels);
+    bool reallocForMipmap(GrVkGpu* gpu, uint32_t mipLevels);
 
 protected:
     GrVkTexture(GrVkGpu*, const GrSurfaceDesc&, const GrVkImageInfo&, const GrVkImageView*,
                 GrVkImage::Wrapped wrapped);
 
     GrVkGpu* getVkGpu() const;
 
     void onAbandon() override;
     void onRelease() override;
 
 private:
     enum Wrapped { kWrapped };
     GrVkTexture(GrVkGpu*, SkBudgeted, const GrSurfaceDesc&,
                 const GrVkImageInfo&, const GrVkImageView* imageView);
     GrVkTexture(GrVkGpu*, Wrapped, const GrSurfaceDesc&,
                 const GrVkImageInfo&, const GrVkImageView* imageView, GrVkImage::Wrapped wrapped);
 
     const GrVkImageView*     fTextureView;
     const GrVkImageView*     fLinearTextureView;
 
     typedef GrTexture INHERITED;
 };
 
 #endif