Rename chromeos-microbenchmark package to libchromeos-microbenchmark-dev

This package only contains a header file and a static library, so
libfoo-dev naming is more conventional, and it lets chromiumos-build
know that it can cross-convert the resulting package and install it to
satisfy future build-dependencies without having to add a special case.

Review URL: http://codereview.chromium.org/553066
diff --git a/debian/control b/debian/control
index 7924353..24b4824 100644
--- a/debian/control
+++ b/debian/control
@@ -5,7 +5,7 @@
 Source: chromeos-minijail
 Priority: extra
 Maintainer: The Chromium OS Authors <chromium-os-dev@googlegroups.com>
-Build-Depends: libcap-dev (>= 2.15), debhelper (>= 7.3.0), dh-chromeos, chromeos-microbenchmark, libgtest-dev, libgmock-dev
+Build-Depends: libcap-dev (>= 2.15), debhelper (>= 7.3.0), dh-chromeos, libchromeos-microbenchmark-dev, libgtest-dev, libgmock-dev
 Standards-Version: 3.8.0
 Section: libs