Revert of Consolidate GPU buffer implementations (patchset #10 id:180001 of https://codereview.chromium.org/1825393002/ )

Reason for revert:
Lots of Android redness

Original issue's description:
> Consolidate GPU buffer implementations
>
> Consolidates all the different buffer implementations into a single
> GrBuffer class. This will allow us to add new buffer types, use DSA in
> OpenGL, track buffer bindings by unique ID, cache buffers without
> respect to the type of data they have been used for previously, etc.
> This change is strictly a refactor; it introduces no change in
> functionality.
>
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1825393002
>
> Committed: https://skia.googlesource.com/skia/+/8b1bff29675afd25843439eade634a57f68fe16f

TBR=bsalomon@google.com,egdaniel@google.com,jvanverth@google.com,cdalton@nvidia.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1831133004

1 files changed, 48 insertions, 0 deletions

diff --git a/src/gpu/gl/GrGLIndexBuffer.h b/src/gpu/gl/GrGLIndexBuffer.h
new file mode 100644
index 0000000000..628970a0fa
--- /dev/null
+++ b/src/gpu/gl/GrGLIndexBuffer.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrGLIndexBuffer_DEFINED
+#define GrGLIndexBuffer_DEFINED
+
+#include "GrIndexBuffer.h"
+#include "GrGLBufferImpl.h"
+#include "gl/GrGLInterface.h"
+
+class GrGLGpu;
+
+class GrGLIndexBuffer : public GrIndexBuffer {
+
+public:
+    typedef GrGLBufferImpl::Desc Desc;
+
+    GrGLIndexBuffer(GrGLGpu* gpu, const Desc& desc);
+
+    GrGLuint bufferID() const { return fImpl.bufferID(); }
+    size_t baseOffset() const { return fImpl.baseOffset(); }
+
+protected:
+    void onAbandon() override;
+    void onRelease() override;
+    void setMemoryBacking(SkTraceMemoryDump* traceMemoryDump,
+                          const SkString& dumpName) const override;
+
+private:
+    void* onMap() override;
+    void onUnmap() override;
+    bool onUpdateData(const void* src, size_t srcSizeInBytes) override;
+
+    GrGLGpu* getGpuGL() const {
+        SkASSERT(!this->wasDestroyed());
+        return (GrGLGpu*)(this->getGpu());
+    }
+
+    GrGLBufferImpl fImpl;
+
+    typedef GrIndexBuffer INHERITED;
+};
+
+#endif