Implement tex{Sub}Image{2|3}D with ArrayBufferView sub source.

third_party/WebKit/Source/core/dom/DOMArrayBufferView.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef DOMArrayBufferView_h
 #define DOMArrayBufferView_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/CoreExport.h"
 #include "core/dom/DOMArrayBuffer.h"
@@ skipping 46 matching lines @@
     }
 
     const WTF::ArrayBufferView* view() const { return m_bufferView.get(); }
     WTF::ArrayBufferView* view() { return m_bufferView.get(); }
 
     ViewType type() const { return view()->type(); }
     const char* typeName() { return view()->typeName(); }
     void* baseAddress() const { return view()->baseAddress(); }
     unsigned byteOffset() const { return view()->byteOffset(); }
     unsigned byteLength() const { return view()->byteLength(); }
+    unsigned typeSize() const { return view()->typeSize(); }
     void setNeuterable(bool flag) { return view()->setNeuterable(flag); }
     bool isShared() const { return view()->isShared(); }
 
     v8::Local<v8::Object> wrap(v8::Isolate*, v8::Local<v8::Object> creationContext) override
     {
         ASSERT_NOT_REACHED();
         return v8::Local<v8::Object>();
     }
 
     DEFINE_INLINE_VIRTUAL_TRACE()
@@ skipping 17 matching lines @@
     }
 
 private:
     RefPtr<WTF::ArrayBufferView> m_bufferView;
     mutable Member<DOMArrayBufferBase> m_domArrayBuffer;
 };
 
 } // namespace blink
 
 #endif // DOMArrayBufferView_h