Implement blit image for copySurface in Vulkan

src/gpu/vk/GrVkGpu.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 GrVkGpu_DEFINED
 #define GrVkGpu_DEFINED
 
@@ skipping 156 matching lines @@
     // Bind vertex and index buffers
     void bindGeometry(const GrPrimitiveProcessor&, const GrNonInstancedMesh&);
 
     // Ends and submits the current command buffer to the queue and then creates a new command
     // buffer and begins it. If sync is set to kForce_SyncQueue, the function will wait for all
     // work in the queue to finish before returning.
     void submitCommandBuffer(SyncQueue sync);
 
     void copySurfaceAsCopyImage(GrSurface* dst,
                                 GrSurface* src,
+                                GrVkImage* dstImage,
+                                GrVkImage* srcImage,
                                 const SkIRect& srcRect,
                                 const SkIPoint& dstPoint);
 
+    void copySurfaceAsBlit(GrSurface* dst,
+                           GrSurface* src,
+                           GrVkImage* dstImage,
+                           GrVkImage* srcImage,
+                           const SkIRect& srcRect,
+                           const SkIPoint& dstPoint);
+
     void copySurfaceAsDraw(GrSurface* dst,
                            GrSurface* src,
                            const SkIRect& srcRect,
                            const SkIPoint& dstPoint);
 
     // helper for onCreateTexture and writeTexturePixels
     bool uploadTexData(GrVkTexture* tex,
                        int left, int top, int width, int height,
                        GrPixelConfig dataConfig,
                        const void* data,
@@ skipping 21 matching lines @@
 
     // Shaderc compiler used for compiling glsl in spirv. We only want to create the compiler once
     // since there is significant overhead to the first compile of any compiler.
     shaderc_compiler_t fCompiler;
 
 
     typedef GrGpu INHERITED;
 };
 
 #endif