Remove most of the old compositing code.

sky/engine/core/rendering/compositing/CompositingInputsUpdater.h

Index: sky/engine/core/rendering/compositing/CompositingInputsUpdater.h
diff --git a/sky/engine/core/rendering/compositing/CompositingInputsUpdater.h b/sky/engine/core/rendering/compositing/CompositingInputsUpdater.h
deleted file mode 100644
index 10289cbbc7b163a8fca93cf9eac1ed8160ddc3b3..0000000000000000000000000000000000000000
--- a/sky/engine/core/rendering/compositing/CompositingInputsUpdater.h
+++ /dev/null
@@ -1,61 +0,0 @@
-// 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 SKY_ENGINE_CORE_RENDERING_COMPOSITING_COMPOSITINGINPUTSUPDATER_H_
-#define SKY_ENGINE_CORE_RENDERING_COMPOSITING_COMPOSITINGINPUTSUPDATER_H_
-
-#include "sky/engine/core/rendering/RenderGeometryMap.h"
-
-namespace blink {
-
-class RenderLayer;
-
-class CompositingInputsUpdater {
-public:
-    explicit CompositingInputsUpdater(RenderLayer* rootRenderLayer);
-    ~CompositingInputsUpdater();
-
-    void update();
-
-#if ENABLE(ASSERT)
-    static void assertNeedsCompositingInputsUpdateBitsCleared(RenderLayer*);
-#endif
-
-private:
-    enum UpdateType {
-        DoNotForceUpdate,
-        ForceUpdate,
-    };
-
-    struct AncestorInfo {
-        AncestorInfo()
-            : ancestorStackingContext(0)
-            , enclosingCompositedLayer(0)
-            , lastScrollingAncestor(0)
-            , hasAncestorWithClipOrOverflowClip(false)
-            , hasAncestorWithClipPath(false)
-        {
-        }
-
-        RenderLayer* ancestorStackingContext;
-        RenderLayer* enclosingCompositedLayer;
-        // Notice that lastScrollingAncestor isn't the same thing as
-        // ancestorScrollingLayer. The former is just the nearest scrolling
-        // along the RenderLayer::parent() chain. The latter is the layer that
-        // actually controls the scrolling of this layer, which we find on the
-        // containing block chain.
-        RenderLayer* lastScrollingAncestor;
-        bool hasAncestorWithClipOrOverflowClip;
-        bool hasAncestorWithClipPath;
-    };
-
-    void updateRecursive(RenderLayer*, UpdateType, AncestorInfo);
-
-    RenderGeometryMap m_geometryMap;
-    RenderLayer* m_rootRenderLayer;
-};
-
-} // namespace blink
-
-#endif  // SKY_ENGINE_CORE_RENDERING_COMPOSITING_COMPOSITINGINPUTSUPDATER_H_