CHOP-763: Make LLView::TemporaryDrilldownFunc boost::noncopyable. Code review with Alain turned up the fact that TemporaryDrilldownFunc, simple to the point of naivety, doesn't address the case of its being copied. Making it boost::noncopyable should turn any such usage into a compile error.
CHOP-763: Make LLView::TemporaryDrilldownFunc boost::noncopyable.
Code review with Alain turned up the fact that TemporaryDrilldownFunc, simple
to the point of naivety, doesn't address the case of its being copied. Making
it boost::noncopyable should turn any such usage into a compile error.

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