4c1f12efcf
This patch adds a native C++ Builder object for StaticLayout to complement the Java one introduced in a previous patch. The Builder object contains state used in constructing a layout, as well as temporary buffers, to avoid having to allocate such. In particular, it holds a break iterator, so avoids the cost of constructing that in the common case of a single locale. Change-Id: I1125103b7ccf00b8674c1586c3ea8d5d915fdd5b