am b1a8f54b: am 27123468: Use a simple replacement for String8 that allocates...

am b1a8f54b: am 27123468: Use a simple replacement for String8 that allocates its storage beforehand to avoid reentering the heap while we\'re examining it (leak checker).

Merge commit 'b1a8f54bf62c3974831bf3c866275425127cf7b6'

* commit 'b1a8f54bf62c3974831bf3c866275425127cf7b6':
  Use a simple replacement for String8 that allocates its storage beforehand to avoid reentering the heap while we're examining it (leak checker).