tree c48cb3bd188fea31fe7b8f923de21096e1cfefa0
parent 92ca333976cf381de004945f95fa1e347d0a3a0e
author Mathieu Chartier <mathieuc@google.com> 1445883618 -0700
committer Mathieu Chartier <mathieuc@google.com> 1445885130 -0700

Add HashSet::Reserve

Reserves enough room to insert n elements without expanding.
Motivation is to use this for cases where we know how many elements
will be inserted.

Change-Id: I3c51fc7f4601903411fc90b0f1bf270fe9a30919