Simplify RenderLayer's handling of filters.

sky/engine/platform/graphics/filters/ReferenceFilter.cpp

Index: sky/engine/platform/graphics/filters/ReferenceFilter.cpp
diff --git a/sky/engine/platform/graphics/filters/ReferenceFilter.cpp b/sky/engine/platform/graphics/filters/ReferenceFilter.cpp
deleted file mode 100644
index 27761fa9e1f9b5493d2eb51ae1e7d1b2940faccd..0000000000000000000000000000000000000000
--- a/sky/engine/platform/graphics/filters/ReferenceFilter.cpp
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
- * Copyright (C) 2013 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 THE COPYRIGHT HOLDER “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 THE COPYRIGHT HOLDER 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.
- */
-
-#include "sky/engine/config.h"
-
-#include "sky/engine/platform/graphics/filters/ReferenceFilter.h"
-
-#include "sky/engine/platform/graphics/filters/FilterEffect.h"
-#include "sky/engine/platform/graphics/filters/SourceGraphic.h"
-
-namespace blink {
-
-ReferenceFilter::ReferenceFilter()
-    : Filter(AffineTransform())
-    , m_sourceGraphic(SourceGraphic::create(this))
-{
-}
-
-void ReferenceFilter::setLastEffect(PassRefPtr<FilterEffect> effect)
-{
-    m_lastEffect = effect;
-}
-
-ReferenceFilter::~ReferenceFilter()
-{
-}
-
-} // namespace blink