diff -r 000000000000 -r 6474c204b198 content/canvas/src/WebGLBuffer.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/canvas/src/WebGLBuffer.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,71 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef WEBGLBUFFER_H_
+#define WEBGLBUFFER_H_
+
+#include "GLDefs.h"
+#include "mozilla/LinkedList.h"
+#include "mozilla/MemoryReporting.h"
+#include "nsWrapperCache.h"
+#include "WebGLObjectModel.h"
+#include "WebGLTypes.h"
+
+namespace mozilla {
+
+class WebGLElementArrayCache;
+
+class WebGLBuffer MOZ_FINAL
+    : public nsWrapperCache
+    , public WebGLRefCountedObject<WebGLBuffer>
+    , public LinkedListElement<WebGLBuffer>
+    , public WebGLContextBoundObject
+{
+public:
+    WebGLBuffer(WebGLContext *context);
+
+    ~WebGLBuffer();
+
+    void Delete();
+
+    size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
+
+    bool HasEverBeenBound() { return mHasEverBeenBound; }
+    void SetHasEverBeenBound(bool x) { mHasEverBeenBound = x; }
+    GLuint GLName() const { return mGLName; }
+    WebGLsizeiptr ByteLength() const { return mByteLength; }
+    GLenum Target() const { return mTarget; }
+
+    void SetByteLength(WebGLsizeiptr byteLength) { mByteLength = byteLength; }
+
+    void SetTarget(GLenum target);
+
+    bool ElementArrayCacheBufferData(const void* ptr, size_t buffer_size_in_bytes);
+
+    void ElementArrayCacheBufferSubData(size_t pos, const void* ptr, size_t update_size_in_bytes);
+
+    bool Validate(GLenum type, uint32_t max_allowed, size_t first, size_t count,
+                  uint32_t* out_upperBound);
+
+    WebGLContext *GetParentObject() const {
+        return Context();
+    }
+
+    virtual JSObject* WrapObject(JSContext *cx) MOZ_OVERRIDE;
+
+    NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLBuffer)
+    NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLBuffer)
+
+protected:
+
+    GLuint mGLName;
+    bool mHasEverBeenBound;
+    WebGLsizeiptr mByteLength;
+    GLenum mTarget;
+
+    nsAutoPtr<WebGLElementArrayCache> mCache;
+};
+}
+#endif //WEBGLBUFFER_H_