Don't pass paintInvalidationContainer to LayoutBox::savePreviousBoxSizesIfNeeded()

We only need the size of the invalidation rect, so don't need
paintInvalidationContainer to adjust the offset of the rect.

Review URL: https://codereview.chromium.org/1307663002

git-svn-id: svn://svn.chromium.org/blink/trunk@200957 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/core/layout/LayoutBox.cpp

@@ -1396,7 +1396,7 @@ PaintInvalidationReason LayoutBox::invalidatePaintIfNeeded(PaintInvalidationStat
     }
 
     // This is for the next invalidatePaintIfNeeded so must be at the end.
-    savePreviousBoxSizesIfNeeded(newPaintInvalidationContainer);
+    savePreviousBoxSizesIfNeeded();
     return reason;
 }
 
@@ -4574,13 +4574,13 @@ void LayoutBox::setPageLogicalOffset(LayoutUnit offset)
     ensureRareData().m_pageLogicalOffset = offset;
 }
 
-bool LayoutBox::needToSavePreviousBoxSizes(const LayoutBoxModelObject& paintInvalidationContainer)
+bool LayoutBox::needToSavePreviousBoxSizes()
 {
     // If m_rareData is already created, always save.
     if (m_rareData)
         return true;
 
-    LayoutSize paintInvalidationSize = previousPaintInvalidationRectIncludingCompositedScrolling(paintInvalidationContainer).size();
+    LayoutSize paintInvalidationSize = previousPaintInvalidationRectSize();
     // Don't save old box sizes if the paint rect is empty because we'll
     // full invalidate once the paint rect becomes non-empty.
     if (paintInvalidationSize.isEmpty())
@@ -4604,9 +4604,9 @@ bool LayoutBox::needToSavePreviousBoxSizes(const LayoutBoxModelObject& paintInva
     return false;
 }
 
-void LayoutBox::savePreviousBoxSizesIfNeeded(const LayoutBoxModelObject& paintInvalidationContainer)
+void LayoutBox::savePreviousBoxSizesIfNeeded()
 {
-    if (!needToSavePreviousBoxSizes(paintInvalidationContainer))
+    if (!needToSavePreviousBoxSizes())
         return;
 
     LayoutBoxRareData& rareData = ensureRareData();

third_party/WebKit/Source/core/layout/LayoutBox.h

@@ -814,8 +814,8 @@ private:
         return *m_rareData.get();
     }
 
-    bool needToSavePreviousBoxSizes(const LayoutBoxModelObject& paintInvalidationContainer);
-    void savePreviousBoxSizesIfNeeded(const LayoutBoxModelObject& paintInvalidationContainer);
+    bool needToSavePreviousBoxSizes();
+    void savePreviousBoxSizesIfNeeded();
     LayoutSize computePreviousBorderBoxSize(const LayoutSize& previousBoundsSize) const;
 
     bool logicalHeightComputesAsNone(SizeType) const;

third_party/WebKit/Source/core/layout/LayoutObject.h

@@ -999,6 +999,7 @@ public:
     // The previous paint invalidation rect, in the the space of the paint invalidation container (*not* the graphics layer that paints
     // this object).
     LayoutRect previousPaintInvalidationRectIncludingCompositedScrolling(const LayoutBoxModelObject& paintInvalidationContainer) const;
+    LayoutSize previousPaintInvalidationRectSize() const { return previousPaintInvalidationRect().size(); }
     void setPreviousPaintInvalidationRect(const LayoutRect& rect) { m_previousPaintInvalidationRect = rect; }
 
     // Only adjusts if the paint invalidation container is not a composited scroller.