Initial import attempt, just to play with. Many things disabled/removed

ui/cc/TrackingTextureAllocator.h

+/*
+ * Copyright (C) 2011, Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef TrackingTextureAllocator_h
+#define TrackingTextureAllocator_h
+
+#include "TextureManager.h"
+#include <wtf/HashSet.h>
+#include <wtf/PassRefPtr.h>
+
+namespace WebKit {
+class WebGraphicsContext3D;
+}
+
+namespace WebCore {
+
+class TrackingTextureAllocator : public TextureAllocator {
+    WTF_MAKE_NONCOPYABLE(TrackingTextureAllocator);
+public:
+    static PassOwnPtr<TrackingTextureAllocator> create(WebKit::WebGraphicsContext3D* context)
+    {
+        return adoptPtr(new TrackingTextureAllocator(context));
+    }
+    virtual ~TrackingTextureAllocator();
+
+    virtual unsigned createTexture(const IntSize&, GC3Denum format) OVERRIDE;
+    virtual void deleteTexture(unsigned texture, const IntSize&, GC3Denum format) OVERRIDE;
+    virtual void deleteAllTextures() OVERRIDE;
+
+    size_t currentMemoryUseBytes() const { return m_currentMemoryUseBytes; }
+
+    enum TextureUsageHint { Any, FramebufferAttachment };
+
+    void setTextureUsageHint(TextureUsageHint hint) { m_textureUsageHint = hint; }
+    void setUseTextureStorageExt(bool useStorageExt) { m_useTextureStorageExt = useStorageExt; }
+
+protected:
+    explicit TrackingTextureAllocator(WebKit::WebGraphicsContext3D*);
+
+    WebKit::WebGraphicsContext3D* m_context;
+    size_t m_currentMemoryUseBytes;
+    TextureUsageHint m_textureUsageHint;
+    bool m_useTextureStorageExt;
+    HashSet<unsigned> m_allocatedTextureIds;
+};
+
+}
+
+#endif