Consolidate GPU buffer implementations

src/gpu/vk/GrVkTransferBuffer.cpp

 /*
 * Copyright 2015 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
 #include "GrVkTransferBuffer.h"
 #include "GrVkGpu.h"
 #include "SkTraceMemoryDump.h"
@@ skipping 13 matching lines @@
 
     GrVkTransferBuffer* buffer = new GrVkTransferBuffer(gpu, desc, bufferResource);
     if (!buffer) {
         bufferResource->unref(gpu);
     }
     return buffer;
 }
 
 GrVkTransferBuffer::GrVkTransferBuffer(GrVkGpu* gpu, const GrVkBuffer::Desc& desc,
                                        const GrVkBuffer::Resource* bufferResource)
-    : INHERITED(gpu, desc.fSizeInBytes)
+    : INHERITED(gpu, kCopyRead_Type == desc.fType ?
+                     kXferCpuToGpu_GrBufferType : kXferGpuToCpu_GrBufferType,
+                desc.fSizeInBytes, kStream_GrAccessPattern, false)
     , GrVkBuffer(desc, bufferResource) {
     this->registerWithCache();
 }
 
 void GrVkTransferBuffer::onRelease() {
     if (!this->wasDestroyed()) {
         this->vkRelease(this->getVkGpu());
     }
 
     INHERITED::onRelease();
 }
 
 void GrVkTransferBuffer::onAbandon() {
     this->vkAbandon();
     INHERITED::onAbandon();
 }
 
 void GrVkTransferBuffer::setMemoryBacking(SkTraceMemoryDump* traceMemoryDump,
                                           const SkString& dumpName) const {
     SkString buffer_id;
     buffer_id.appendU64((uint64_t)this->buffer());
     traceMemoryDump->setMemoryBacking(dumpName.c_str(), "vk_buffer",
                                       buffer_id.c_str());
 }