nsGfxScrollFrameInner::nsGfxScrollFrameInner(nsContainerFrame* aOuter, PRBool aIsRoot) : mScrollableView(nsnull), mHScrollbarBox(nsnull), mVScrollbarBox(nsnull), mScrolledFrame(nsnull), mScrollCornerBox(nsnull), mOuter(aOuter), mOnePixel(20), mRestoreRect(-1, -1, -1, -1), mLastPos(-1, -1), mLastDir(-1), mNeverHasVerticalScrollbar(PR_FALSE), mNeverHasHorizontalScrollbar(PR_FALSE), mHasVerticalScrollbar(PR_FALSE), mHasHorizontalScrollbar(PR_FALSE), mViewInitiatedScroll(PR_FALSE), mFrameInitiatedScroll(PR_FALSE), mDidHistoryRestore(PR_FALSE), mIsRoot(aIsRoot), mSupppressScrollbarUpdate(PR_FALSE), mDidLoadHistoryVScrollbarHint(PR_FALSE), mHistoryVScrollbarHint(PR_FALSE), mHadNonInitialReflow(PR_FALSE), mHorizontalOverflow(PR_FALSE), mVerticalOverflow(PR_FALSE)
nsGfxScrollFrameInner::nsGfxScrollFrameInner(nsGfxScrollFrame* aOuter):mHScrollbarBox(nsnull), mVScrollbarBox(nsnull), mScrollAreaBox(nsnull), mOnePixel(20), mHasVerticalScrollbar(PR_FALSE), mHasHorizontalScrollbar(PR_FALSE)
nsGfxScrollFrameInner::nsGfxScrollFrameInner(nsContainerFrame* aOuter, PRBool aIsRoot)  : mScrollableView(nsnull),    mHScrollbarBox(nsnull),    mVScrollbarBox(nsnull),    mScrolledFrame(nsnull),    mScrollCornerBox(nsnull),    mOuter(aOuter),    mOnePixel(20),    mRestoreRect(-1, -1, -1, -1),    mLastPos(-1, -1),    mLastDir(-1),    mNeverHasVerticalScrollbar(PR_FALSE),    mNeverHasHorizontalScrollbar(PR_FALSE),    mHasVerticalScrollbar(PR_FALSE),     mHasHorizontalScrollbar(PR_FALSE),    mViewInitiatedScroll(PR_FALSE),    mFrameInitiatedScroll(PR_FALSE),    mDidHistoryRestore(PR_FALSE),    mIsRoot(aIsRoot),    mSupppressScrollbarUpdate(PR_FALSE),    mDidLoadHistoryVScrollbarHint(PR_FALSE),    mHistoryVScrollbarHint(PR_FALSE),    mHadNonInitialReflow(PR_FALSE),    mHorizontalOverflow(PR_FALSE),    mVerticalOverflow(PR_FALSE){}