Mailbox support for texture layers.

cc/texture_layer_impl.h

 // Copyright 2012 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 CC_TEXTURE_LAYER_IMPL_H_
 #define CC_TEXTURE_LAYER_IMPL_H_
 
+#include <string>
+
+#include "base/callback.h"
 #include "cc/cc_export.h"
 #include "cc/layer_impl.h"
 
 namespace cc {
 
 class CC_EXPORT TextureLayerImpl : public LayerImpl {
 public:
-    static scoped_ptr<TextureLayerImpl> create(LayerTreeImpl* treeImpl, int id)
+    static scoped_ptr<TextureLayerImpl> create(LayerTreeImpl* treeImpl, int id, bool usesMailbox)
     {
-        return make_scoped_ptr(new TextureLayerImpl(treeImpl, id));
+        return make_scoped_ptr(new TextureLayerImpl(treeImpl, id, usesMailbox));
     }
     virtual ~TextureLayerImpl();
 
     virtual void willDraw(ResourceProvider*) OVERRIDE;
     virtual void appendQuads(QuadSink&, AppendQuadsData&) OVERRIDE;
     virtual void didDraw(ResourceProvider*) OVERRIDE;
 
     virtual void didLoseOutputSurface() OVERRIDE;
 
     virtual void dumpLayerProperties(std::string*, int indent) const OVERRIDE;
 
     unsigned textureId() const { return m_textureId; }
     void setTextureId(unsigned id) { m_textureId = id; }
     void setPremultipliedAlpha(bool premultipliedAlpha) { m_premultipliedAlpha = premultipliedAlpha; }
     void setFlipped(bool flipped) { m_flipped = flipped; }
     void setUVRect(const gfx::RectF& rect) { m_uvRect = rect; }
 
     // 1--2
     // |  |
     // 0--3
     void setVertexOpacity(const float vertexOpacity[4]);
 
+    void setTextureMailbox(const std::string& mailboxName, const base::Callback<void(unsigned)>& releaseCallback);
+
 private:
-    TextureLayerImpl(LayerTreeImpl* treeImpl, int id);
+    TextureLayerImpl(LayerTreeImpl* treeImpl, int id, bool usesMailbox);
 
     virtual const char* layerTypeAsString() const OVERRIDE;
 
     unsigned m_textureId;
     ResourceProvider::ResourceId m_externalTextureResource;
     bool m_premultipliedAlpha;
     bool m_flipped;
     gfx::RectF m_uvRect;
     float m_vertexOpacity[4];
+
+    bool m_hasPendingMailbox;
+    std::string m_pendingMailboxName;
+    base::Callback<void(unsigned)> m_pendingMailboxReleaseCallback;
+    bool m_usesMailbox;
 };
 
 }
 
 #endif  // CC_TEXTURE_LAYER_IMPL_H_