Remove cullRect() from PaintOpBuffer.

third_party/WebKit/Source/platform/graphics/paint/DrawingDisplayItem.h

 // 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 DrawingDisplayItem_h
 #define DrawingDisplayItem_h
 
 #include "base/compiler_specific.h"
 #include "platform/PlatformExport.h"
 #include "platform/RuntimeEnabledFeatures.h"
-#include "platform/geometry/FloatPoint.h"
+#include "platform/geometry/FloatRect.h"
 #include "platform/graphics/paint/DisplayItem.h"
 #include "platform/graphics/paint/PaintRecord.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 
 namespace blink {
 
+// DrawingDisplayItem contains recorded painting operations which can be
+// replayed to produce a rastered output.
+//
+// This class has two notions of the bounds around the content that was recorded
+// and will be produced by the item. The first is the |record_bounds| which
+// describes the bounds of all content in the |record| in the space of the
+// record. The second is the |visual_rect| which should describe the same thing,
+// but takes into account transforms and clips that would apply to the
+// PaintRecord, and is in the space of the DisplayItemList. This allows the
+// visual_rect to be compared between DrawingDisplayItems, and to give bounds
+// around what the user can actually see from the PaintRecord.
 class PLATFORM_EXPORT DrawingDisplayItem final : public DisplayItem {
  public:
   DISABLE_CFI_PERF
   DrawingDisplayItem(const DisplayItemClient& client,
                      Type type,
                      sk_sp<const PaintRecord> record,
+                     const FloatRect& record_bounds,
                      bool known_to_be_opaque = false)
       : DisplayItem(client, type, sizeof(*this)),
         record_(record && record->size() ? std::move(record) : nullptr),
+        record_bounds_(record_bounds),
         known_to_be_opaque_(known_to_be_opaque) {
     DCHECK(IsDrawingType(type));
   }
 
   void Replay(GraphicsContext&) const override;
-  void AppendToWebDisplayItemList(const IntRect&,
+  void AppendToWebDisplayItemList(const IntRect& visual_rect,
                                   WebDisplayItemList*) const override;
   bool DrawsContent() const override;
 
   const sk_sp<const PaintRecord>& GetPaintRecord() const { return record_; }
+  // This rect is described in the coordinate space relative to the PaintRecord
+  // whose bounds it describes.
+  FloatRect GetPaintRecordBounds() const { return record_bounds_; }
 
   bool KnownToBeOpaque() const {
     DCHECK(RuntimeEnabledFeatures::slimmingPaintV2Enabled());
     return known_to_be_opaque_;
   }
 
   int NumberOfSlowPaths() const override;
 
  private:
 #ifndef NDEBUG
   void DumpPropertiesAsDebugString(WTF::StringBuilder&) const override;
 #endif
   bool Equals(const DisplayItem& other) const final;
 
   sk_sp<const PaintRecord> record_;
+  FloatRect record_bounds_;
 
   // True if there are no transparent areas. Only used for SlimmingPaintV2.
   const bool known_to_be_opaque_;
 };
 
 }  // namespace blink
 
 #endif  // DrawingDisplayItem_h