Make the compositing assert disabler for paint invalidation more targeted.

Source/core/rendering/RenderView.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 571 matching lines @@
         }
         selRect.unite(currRect);
     }
     return pixelSnappedIntRect(selRect);
 }
 
 void RenderView::invalidatePaintForSelection() const
 {
     HashSet<RenderBlock*> processedBlocks;
 
+    // For querying RenderLayer::compositingState()
+    // FIXME: this may be wrong. crbug.com/407416
+    DisableCompositingQueryAsserts disabler;
+
     RenderObject* end = rendererAfterPosition(m_selectionEnd, m_selectionEndPos);
     for (RenderObject* o = m_selectionStart; o && o != end; o = o->nextInPreOrder()) {
         if (!o->canBeSelectionLeaf() && o != m_selectionStart && o != m_selectionEnd)
             continue;
         if (o->selectionState() == SelectionNone)
             continue;
 
         RenderSelectionInfo(o, true).invalidatePaint();
 
         // Blocks are responsible for painting line gaps and margin gaps. They must be examined as well.
@@ skipping 133 matching lines @@
                 cb = cb->containingBlock();
             }
         }
 
         o = getNextOrPrevRenderObjectBasedOnDirection(o, stop, continueExploring, exploringBackwards);
     }
 
     if (!m_frameView || blockPaintInvalidationMode == PaintInvalidationNothing)
         return;
 
+    // For querying RenderLayer::compositingState()
+    // FIXME: this is wrong, selection should not cause eager invalidation. crbug.com/407416
+    DisableCompositingQueryAsserts disabler;
+
     // Have any of the old selected objects changed compared to the new selection?
     for (SelectedObjectMap::iterator i = oldSelectedObjects.begin(); i != oldObjectsEnd; ++i) {
         RenderObject* obj = i->key;
         RenderSelectionInfo* newInfo = newSelectedObjects.get(obj);
         RenderSelectionInfo* oldInfo = i->value.get();
         if (!newInfo || oldInfo->rect() != newInfo->rect() || oldInfo->state() != newInfo->state() ||
             (m_selectionStart == obj && oldStartPos != m_selectionStartPos) ||
             (m_selectionEnd == obj && oldEndPos != m_selectionEndPos)) {
             oldInfo->invalidatePaint();
             if (newInfo) {
@@ skipping 32 matching lines @@
 void RenderView::getSelection(RenderObject*& startRenderer, int& startOffset, RenderObject*& endRenderer, int& endOffset) const
 {
     startRenderer = m_selectionStart;
     startOffset = m_selectionStartPos;
     endRenderer = m_selectionEnd;
     endOffset = m_selectionEndPos;
 }
 
 void RenderView::clearSelection()
 {
+    // For querying RenderLayer::compositingState()
+    // This is correct, since destroying render objects needs to cause eager paint invalidations.
+    DisableCompositingQueryAsserts disabler;
+
     layer()->invalidatePaintForBlockSelectionGaps();
     setSelection(0, -1, 0, -1, PaintInvalidationNewMinusOld);
 }
 
 void RenderView::selectionStartEnd(int& startPos, int& endPos) const
 {
     startPos = m_selectionStartPos;
     endPos = m_selectionEndPos;
 }
 
@@ skipping 184 matching lines @@
     return viewWidth(IncludeScrollbars) / scale;
 }
 
 double RenderView::layoutViewportHeight() const
 {
     float scale = m_frameView ? m_frameView->frame().pageZoomFactor() : 1;
     return viewHeight(IncludeScrollbars) / scale;
 }
 
 } // namespace blink