Move external/chromium off external/icu4c.

Bug: 16893416
Change-Id: I561888c2fc6a5599f239ee0ec41e4debc185e7ff
Merge "Move external/chromium off external/icu4c."
Fix external/chromium build with strerror_r.

We're about to add GNU strerror_r to bionic in addition to the POSIX
one we've always had.

Bug: 16243479
Change-Id: I7ca907ed2b879feab4be8ba0180f83fc22fe86c6
Merge "Fix external/chromium build with strerror_r."