RFR(S): 8168492: Convert CollectedHeap_test to GTest

[Thomas Schatzl]

Hi Kirill,

  in case you need another review...

> On Nov 1, 2016, at 5:10 PM, Kirill Zhaldybin
> <kirill.zhaldybin at oracle.com> wrote:
> > 
> > Dear all,
> > 
> > Could you please review this fix for 8168492?
> > 
> > WebRev: http://cr.openjdk.java.net/~kzhaldyb/webrevs/JDK-8168492/we
> > brev.00/
> > CR: https://bugs.openjdk.java.net/browse/JDK-8168492

In line 

  47   ASSERT_LE(heap_end, ((uintptr_t) - 1 - epsilon))

the "-" in the "- 1" expression is an unary minus, not the regular
minus operator, so the space between it and the "1" should be removed.

Further the space between the uintptr_t cast and the unary minus seems
not appropriate.

I.e. the expression should look like "((uintptr_t)-1 - epsilon)" like
in the original code.

I do not need a re-review for this.

Thanks,
  Thomas