Consolidate GPU buffer implementations

src/gpu/vk/GrVkBuffer.h

Index: src/gpu/vk/GrVkBuffer.h
diff --git a/src/gpu/vk/GrVkBuffer.h b/src/gpu/vk/GrVkBuffer.h
index 7dac3a1149a38d3fb1dd5e896609b4e7cbdcefdf..2961637ccd1b4547461068b5b0c081972f50d117 100644
--- a/src/gpu/vk/GrVkBuffer.h
+++ b/src/gpu/vk/GrVkBuffer.h
@@ -8,6 +8,7 @@
 #ifndef GrVkBuffer_DEFINED
 #define GrVkBuffer_DEFINED
 
+#include "GrBuffer.h"
 #include "vk/GrVkInterface.h"
 #include "GrVkResource.h"
 
@@ -17,7 +18,7 @@ class GrVkGpu;
  * This class serves as the base of GrVk*Buffer classes. It was written to avoid code
  * duplication in those classes.
  */
-class GrVkBuffer : public SkNoncopyable {
+class GrVkBuffer : public GrBuffer {
 public:
     ~GrVkBuffer() {
         // either release or abandon should have been called by the owner of this object.
@@ -36,19 +37,11 @@ public:
                           VkPipelineStageFlags dstStageMask,
                           bool byRegion) const;
 
-    enum Type {
-        kVertex_Type,
-        kIndex_Type,
-        kUniform_Type,
-        kCopyRead_Type,
-        kCopyWrite_Type,
-    };
-
 protected:
     struct Desc {
-        size_t      fSizeInBytes;
-        Type        fType;         // vertex buffer, index buffer, etc.
-        bool        fDynamic;
+        size_t            fSizeInBytes;
+        GrBufferType      fType;         // vertex buffer, index buffer, etc.
+        GrAccessPattern   fAccessPattern;
     };
 
     class Resource : public GrVkResource {
@@ -67,16 +60,16 @@ protected:
     static const Resource* Create(const GrVkGpu* gpu,
                                   const Desc& descriptor);
 
-    GrVkBuffer(const Desc& desc, const GrVkBuffer::Resource* resource)
-        : fDesc(desc), fResource(resource), fMapPtr(nullptr) {
-    }
+    GrVkBuffer(GrVkGpu* gpu, const Desc& desc, const GrVkBuffer::Resource* resource);
+
+    GrVkGpu* vkGpu() const;
 
-    void* vkMap(const GrVkGpu* gpu);
-    void vkUnmap(const GrVkGpu* gpu);
-    bool vkUpdateData(const GrVkGpu* gpu, const void* src, size_t srcSizeInBytes);
+    void onMap() override;
+    void onUnmap() override;
+    bool onUpdateData(const void* src, size_t srcSizeInBytes) override;
 
-    void vkAbandon();
-    void vkRelease(const GrVkGpu* gpu);
+    void onAbandon() override;
+    void onRelease() override;
 
 private:
     void validate() const;
@@ -86,7 +79,7 @@ private:
     const Resource*         fResource;
     void*                   fMapPtr;
 
-    typedef SkRefCnt INHERITED;
+    typedef GrBuffer INHERITED;
 };
 
 #endif