Remove the old text autosizer (2)

Source/core/rendering/TextAutosizer.h

Index: Source/core/rendering/TextAutosizer.h
diff --git a/Source/core/rendering/TextAutosizer.h b/Source/core/rendering/TextAutosizer.h
deleted file mode 100644
index 5f7ff37fe654e5cc99a3c6b9996829134ba8c97d..0000000000000000000000000000000000000000
--- a/Source/core/rendering/TextAutosizer.h
+++ /dev/null
@@ -1,150 +0,0 @@
-/*
- * Copyright (C) 2012 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 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 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 TextAutosizer_h
-#define TextAutosizer_h
-
-#include "core/HTMLNames.h"
-#include "platform/heap/Handle.h"
-#include "platform/text/WritingMode.h"
-#include "wtf/HashMap.h"
-#include "wtf/Noncopyable.h"
-#include "wtf/OwnPtr.h"
-#include "wtf/PassOwnPtr.h"
-
-namespace blink {
-
-class Document;
-class RenderBlock;
-class RenderObject;
-struct TextAutosizingWindowInfo;
-
-// Represents cluster related data. Instances should not persist between calls to processSubtree.
-struct TextAutosizingClusterInfo {
-    explicit TextAutosizingClusterInfo(RenderBlock* root)
-        : root(root)
-        , blockContainingAllText(0)
-        , maxAllowedDifferenceFromTextWidth(150)
-    {
-    }
-
-    RenderBlock* root;
-    const RenderBlock* blockContainingAllText;
-
-    // Upper limit on the difference between the width of the cluster's block containing all
-    // text and that of a narrow child before the child becomes a separate cluster.
-    float maxAllowedDifferenceFromTextWidth;
-
-    // Descendants of the cluster that are narrower than the block containing all text and must be
-    // processed together.
-    Vector<TextAutosizingClusterInfo> narrowDescendants;
-};
-
-class TextAutosizer FINAL : public NoBaseWillBeGarbageCollectedFinalized<TextAutosizer> {
-    WTF_MAKE_NONCOPYABLE(TextAutosizer);
-public:
-    static PassOwnPtrWillBeRawPtr<TextAutosizer> create(Document* document)
-    {
-        return adoptPtrWillBeNoop(new TextAutosizer(document));
-    }
-
-    bool processSubtree(RenderObject* layoutRoot);
-    void recalculateMultipliers();
-
-    void trace(Visitor*);
-
-private:
-    friend class FastTextAutosizer;
-
-    enum TraversalDirection {
-        FirstToLast,
-        LastToFirst
-    };
-
-    explicit TextAutosizer(Document*);
-
-    bool isApplicable() const;
-    float clusterMultiplier(WritingMode, const TextAutosizingWindowInfo&, float textWidth) const;
-
-    void processClusterInternal(TextAutosizingClusterInfo&, RenderBlock* container, RenderObject* subtreeRoot, const TextAutosizingWindowInfo&, float multiplier);
-    void processCluster(TextAutosizingClusterInfo&, RenderBlock* container, RenderObject* subtreeRoot, const TextAutosizingWindowInfo&);
-    void processCompositeCluster(Vector<TextAutosizingClusterInfo>&, const TextAutosizingWindowInfo&);
-    void processContainer(float multiplier, RenderBlock* container, TextAutosizingClusterInfo&, RenderObject* subtreeRoot, const TextAutosizingWindowInfo&);
-
-    void setMultiplier(RenderObject*, float);
-    void setMultiplierForList(RenderObject* renderer, float multiplier);
-
-    unsigned getCachedHash(const RenderObject* renderer, bool putInCacheIfAbsent);
-
-    static bool isAutosizingContainer(const RenderObject*);
-    static bool isNarrowDescendant(const RenderBlock*, TextAutosizingClusterInfo& parentClusterInfo);
-    static bool isWiderDescendant(const RenderBlock*, const TextAutosizingClusterInfo& parentClusterInfo);
-    static bool isIndependentDescendant(const RenderBlock*);
-    static bool isAutosizingCluster(const RenderBlock*, TextAutosizingClusterInfo& parentClusterInfo);
-
-    static bool containerShouldBeAutosized(const RenderBlock* container);
-    static bool containerContainsOneOfTags(const RenderBlock* cluster, const Vector<QualifiedName>& tags);
-    static bool containerIsRowOfLinks(const RenderObject* container);
-    static bool contentHeightIsConstrained(const RenderBlock* container);
-    static bool compositeClusterShouldBeAutosized(Vector<TextAutosizingClusterInfo>&, float blockWidth);
-    static void measureDescendantTextWidth(const RenderBlock* container, TextAutosizingClusterInfo&, float minTextWidth, float& textWidth);
-    unsigned computeCompositeClusterHash(Vector<TextAutosizingClusterInfo>&);
-    float computeMultiplier(Vector<TextAutosizingClusterInfo>&, const TextAutosizingWindowInfo&, float textWidth);
-
-    // Use to traverse the tree of descendants, excluding descendants of containers (but returning the containers themselves).
-    static RenderObject* nextInPreOrderSkippingDescendantsOfContainers(const RenderObject*, const RenderObject* stayWithin);
-
-    static const RenderBlock* findDeepestBlockContainingAllText(const RenderBlock* cluster);
-
-    // Depending on the traversal direction specified, finds the first or the last leaf text node child that doesn't
-    // belong to any cluster.
-    static const RenderObject* findFirstTextLeafNotInCluster(const RenderObject*, size_t& depth, TraversalDirection);
-
-    // Returns groups of narrow descendants of a given autosizing cluster. The groups are combined
-    // by the difference between the width of the descendant and the width of the parent cluster's
-    // |blockContainingAllText|.
-    static void getNarrowDescendantsGroupedByWidth(const TextAutosizingClusterInfo& parentClusterInfo, Vector<Vector<TextAutosizingClusterInfo> >&);
-
-    void addNonAutosizedCluster(unsigned key, TextAutosizingClusterInfo& value);
-    void secondPassProcessStaleNonAutosizedClusters();
-    void processStaleContainer(float multiplier, RenderBlock* cluster, TextAutosizingClusterInfo&);
-
-    RawPtrWillBeMember<Document> m_document;
-
-    HashMap<const RenderObject*, unsigned> m_hashCache;
-
-    // Mapping from all autosized (i.e. multiplier > 1) cluster hashes to their respective multipliers.
-    HashMap<unsigned, float> m_hashToMultiplier;
-    Vector<unsigned> m_hashesToAutosizeSecondPass;
-
-    // Mapping from a cluster hash to the corresponding cluster infos which have not been autosized yet.
-    HashMap<unsigned, OwnPtr<Vector<TextAutosizingClusterInfo> > > m_nonAutosizedClusters;
-
-    bool m_previouslyAutosized;
-};
-
-} // namespace blink
-
-#endif // TextAutosizer_h