Changes subtreeShouldRenderToSeparateSurface logic to account for explicit clipping

cc/texture_layer.h

 // Copyright 2010 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_H_
 #define CC_TEXTURE_LAYER_H_
 
 #include "cc/cc_export.h"
 #include "cc/layer.h"
 
@@ skipping 37 matching lines @@
     void willModifyTexture();
 
     virtual void setNeedsDisplayRect(const gfx::RectF&) OVERRIDE;
 
     virtual void setLayerTreeHost(LayerTreeHost*) OVERRIDE;
     virtual bool drawsContent() const OVERRIDE;
     virtual void update(ResourceUpdateQueue&, const OcclusionTracker*, RenderingStats&) OVERRIDE;
     virtual void pushPropertiesTo(LayerImpl*) OVERRIDE;
     virtual bool blocksPendingCommit() const OVERRIDE;
 
+    bool canClipSelf() const OVERRIDE { return true; }
+
 protected:
     explicit TextureLayer(TextureLayerClient*);
     virtual ~TextureLayer();
 
 private:
     TextureLayerClient* m_client;
 
     bool m_flipped;
     gfx::RectF m_uvRect;
     bool m_premultipliedAlpha;
     bool m_rateLimitContext;
     bool m_contextLost;
     bool m_contentCommitted;
 
     unsigned m_textureId;
 };
 
 }
 #endif  // CC_TEXTURE_LAYER_H_