Remove IntSize::area, and rename IntSize::area_safe() to IntSize::area()

Source/core/rendering/compositing/RenderLayerCompositor.cpp

 /*
  * Copyright (C) 2009, 2010 Apple 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
@@ skipping 640 matching lines @@
         return true;
     }
     return false;
 }
 
 bool RenderLayerCompositor::squashingWouldExceedSparsityTolerance(const RenderLayer* candidate, const RenderLayerCompositor::SquashingState& squashingState)
 {
     IntRect bounds = candidate->ancestorDependentProperties().clippedAbsoluteBoundingBox;
     IntRect newBoundingRect = squashingState.boundingRect;
     newBoundingRect.unite(bounds);
-    const uint64_t newBoundingRectArea = newBoundingRect.size().area_safe();
-    const uint64_t newSquashedArea = squashingState.totalAreaOfSquashedRects + bounds.size().area_safe();
+    const uint64_t newBoundingRectArea = newBoundingRect.size().area();
+    const uint64_t newSquashedArea = squashingState.totalAreaOfSquashedRects + bounds.size().area();
     return newBoundingRectArea > gSquashingSparsityTolerance * newSquashedArea;
 }
 
 bool RenderLayerCompositor::canSquashIntoCurrentSquashingOwner(const RenderLayer* layer, const RenderLayerCompositor::SquashingState& squashingState)
 {
     if (squashingWouldExceedSparsityTolerance(layer, squashingState))
         return false;
 
     // FIXME: this is not efficient, since it walks up the tree . We should store these values on the AncestorDependentPropertiesCache.
     ASSERT(squashingState.hasMostRecentMapping);
@@ skipping 1027 matching lines @@
     } else if (graphicsLayer == m_scrollLayer.get()) {
         name = "LocalFrame Scrolling Layer";
     } else {
         ASSERT_NOT_REACHED();
     }
 
     return name;
 }
 
 } // namespace WebCore