Refactor creation of GrVkRenderPasses to make them move general

src/gpu/vk/GrVkRenderTarget.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 GrVkRenderTarget_DEFINED
 #define GrVkRenderTarget_DEFINED
 
 #include "GrVkImage.h"
 #include "GrRenderTarget.h"
 
 #include "GrVkRenderPass.h"
+#include "GrVkResourceProvider.h"
 
 class GrVkCommandBuffer;
 class GrVkFramebuffer;
 class GrVkGpu;
 class GrVkImageView;
 class GrVkStencilAttachment;
 
 struct GrVkImageInfo;
 
 #ifdef SK_BUILD_FOR_WIN
@@ skipping 102 matching lines @@
 
     const GrVkFramebuffer*     fFramebuffer;
     const GrVkImageView*       fColorAttachmentView;
     GrVkImage*                 fMSAAImage;
     const GrVkImageView*       fResolveAttachmentView;
     int                        fColorValuesPerPixel;
 
     // This is a cached pointer to a simple render pass. The render target should unref it
     // once it is done with it.
     const GrVkRenderPass*      fCachedSimpleRenderPass;
+    // This is a handle to be used to quickly get compatible GrVkRenderPasses for this render target
+    GrVkResourceProvider::CompatibleRPHandle fCompatibleRPHandle;
 };
 
 #endif