Revert of Sketch splitting SkPicture into an interface and SkBigPicture.

src/core/SkBigPicture.h

-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef SkBigPicture_DEFINED
-#define SkBigPicture_DEFINED
-
-#include "SkPicture.h"
-#include "SkLazyPtr.h"
-
-class SkBBoxHierarchy;
-class SkRecord;
-
-// An implementation of SkPicture supporting an arbitrary number of drawing commands.
-class SkBigPicture final : public SkPicture {
-public:
-    // AccelData provides a base class for device-specific acceleration data.
-    class AccelData : public SkRefCnt { };
-
-    // An array of refcounted const SkPicture pointers.
-    class SnapshotArray : ::SkNoncopyable {
-    public:
-        SnapshotArray(const SkPicture* pics[], int count) : fPics(pics), fCount(count) {}
-        ~SnapshotArray() { for (int i = 0; i < fCount; i++) { fPics[i]->unref(); } }
-
-        const SkPicture* const* begin() const { return fPics; }
-        int count() const { return fCount; }
-    private:
-        SkAutoTMalloc<const SkPicture*> fPics;
-        int fCount;
-    };
-
-    SkBigPicture(const SkRect& cull,
-                 SkRecord*,            // We take ownership of the caller's ref.
-                 SnapshotArray*,       // We take exclusive ownership.
-                 SkBBoxHierarchy*,     // We take ownership of the caller's ref.
-                 AccelData*,           // We take ownership of the caller's ref.
-                 size_t approxBytesUsedBySubPictures);
-
-
-// SkPicture overrides
-    void playback(SkCanvas*, AbortCallback*) const override;
-    SkRect cullRect() const override;
-    bool hasText() const override;
-    bool willPlayBackBitmaps() const override;
-    int approximateOpCount() const override;
-    size_t approximateBytesUsed() const override;
-    const SkBigPicture* asSkBigPicture() const override { return this; }
-
-// Used by GrLayerHoister
-    void partialPlayback(SkCanvas*,
-                         unsigned start,
-                         unsigned stop,
-                         const SkMatrix& initialCTM) const;
-// Used by GrRecordReplaceDraw
-    const SkBBoxHierarchy* bbh() const { return fBBH; }
-    const SkRecord*     record() const { return fRecord; }
-    const AccelData* accelData() const { return fAccelData; }
-
-private:
-    struct Analysis {
-        explicit Analysis(const SkRecord&);
-
-        bool suitableForGpuRasterization(const char** reason) const;
-
-        uint8_t fNumSlowPathsAndDashEffects;
-        bool    fWillPlaybackBitmaps : 1;
-        bool    fHasText             : 1;
-    };
-
-    int numSlowPaths() const override;
-    const Analysis& analysis() const;
-    int drawableCount() const;
-    SkPicture const* const* drawablePicts() const;
-
-    const SkRect                          fCullRect;
-    const size_t                          fApproxBytesUsedBySubPictures;
-    SkLazyPtr<const Analysis>             fAnalysis;
-    SkAutoTUnref<const SkRecord>          fRecord;
-    SkAutoTDelete<const SnapshotArray>    fDrawablePicts;
-    SkAutoTUnref<const SkBBoxHierarchy>   fBBH;
-    SkAutoTUnref<const AccelData>         fAccelData;
-};
-
-#endif//SkBigPicture_DEFINED