Consolidate GPU buffer implementations

src/gpu/vk/GrVkVertexBuffer.h

Index: src/gpu/vk/GrVkVertexBuffer.h
diff --git a/src/gpu/vk/GrVkVertexBuffer.h b/src/gpu/vk/GrVkVertexBuffer.h
index 82f00597b71fbc086b13f9116999f171db3558a7..5004c0bb8e6dfc186ca829a00267d14d63353b7e 100644
--- a/src/gpu/vk/GrVkVertexBuffer.h
+++ b/src/gpu/vk/GrVkVertexBuffer.h
@@ -8,31 +8,21 @@
 #ifndef GrVkVertexBuffer_DEFINED
 #define GrVkVertexBuffer_DEFINED
 
-#include "GrVertexBuffer.h"
+#include "GrBuffer.h"
 #include "GrVkBuffer.h"
 #include "vk/GrVkInterface.h"
 
 class GrVkGpu;
 
-class GrVkVertexBuffer : public GrVertexBuffer, public GrVkBuffer {
+class GrVkVertexBuffer : public GrVkBuffer {
 public:
-    static GrVkVertexBuffer* Create(GrVkGpu* gpu, size_t size, bool dynamic);
-
-protected:
-    void onAbandon() override;
-    void onRelease() override;
+    static GrVkVertexBuffer* Create(GrVkGpu* gpu, size_t size, GrAccessPattern accessPattern);
 
 private:
     GrVkVertexBuffer(GrVkGpu* gpu, const GrVkBuffer::Desc& desc,
                      const GrVkBuffer::Resource* resource);
 
-    void* onMap() override;
-    void onUnmap() override;
-    bool onUpdateData(const void* src, size_t srcSizeInBytes) override;
-
-    GrVkGpu* getVkGpu() const;
-
-    typedef GrVertexBuffer INHERITED;
+    typedef GrVkBuffer INHERITED;
 };
 
 #endif