(WIP) Invalidation during painting (for synchronized painting)

third_party/WebKit/Source/core/paint/ScrollableAreaPainter.cpp

 // 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.
 
 #include "core/paint/ScrollableAreaPainter.h"
 
 #include "core/layout/LayoutView.h"
 #include "core/page/Page.h"
 #include "core/paint/LayoutObjectDrawingRecorder.h"
 #include "core/paint/PaintInfo.h"
@@ skipping 16 matching lines @@
         return;
     absRect.moveBy(paintOffset);
 
     if (scrollableArea().resizer()) {
         if (!cullRect.intersectsCullRect(absRect))
             return;
         ScrollbarPainter::paintIntoRect(*scrollableArea().resizer(), context, paintOffset, LayoutRect(absRect));
         return;
     }
 
-    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(context, scrollableArea().box(), DisplayItem::Resizer, paintOffset))
+    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(context, scrollableArea().box(), DisplayItem::Resizer))
         return;
 
-    LayoutObjectDrawingRecorder recorder(context, scrollableArea().box(), DisplayItem::Resizer, absRect, paintOffset);
+    LayoutObjectDrawingRecorder recorder(context, scrollableArea().box(), DisplayItem::Resizer, absRect);
 
     drawPlatformResizerImage(context, absRect);
 
     // Draw a frame around the resizer (1px grey line) if there are any scrollbars present.
     // Clipping will exclude the right and bottom edges of this frame.
     if (!scrollableArea().hasOverlayScrollbars() && scrollableArea().hasScrollbar()) {
         GraphicsContextStateSaver stateSaver(context);
         context.clip(absRect);
         IntRect largerCorner = absRect;
         largerCorner.setSize(IntSize(largerCorner.width() + 1, largerCorner.height() + 1));
@@ skipping 126 matching lines @@
             return;
         ScrollbarPainter::paintIntoRect(*scrollableArea().scrollCorner(), context, paintOffset, LayoutRect(absRect));
         return;
     }
 
     // We don't want to paint white if we have overlay scrollbars, since we need
     // to see what is behind it.
     if (scrollableArea().hasOverlayScrollbars())
         return;
 
-    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(context, scrollableArea().box(), DisplayItem::ScrollbarCorner, paintOffset))
+    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(context, scrollableArea().box(), DisplayItem::ScrollbarCorner))
         return;
 
-    LayoutObjectDrawingRecorder recorder(context, scrollableArea().box(), DisplayItem::ScrollbarCorner, absRect, paintOffset);
+    LayoutObjectDrawingRecorder recorder(context, scrollableArea().box(), DisplayItem::ScrollbarCorner, absRect);
     context.fillRect(absRect, Color::white);
 }
 
 PaintLayerScrollableArea& ScrollableAreaPainter::scrollableArea() const
 {
     return *m_scrollableArea;
 }
 
 } // namespace blink