convert to SLOT-ed libbase

BUG=chromium-os:16623
TEST=`emerge-x86-alex speech_synthesis` works

Change-Id: I4ec718128ad5abeaad3ebac44dfd89ca747f463e
Reviewed-on: https://gerrit.chromium.org/gerrit/17722
Reviewed-by: Ryo Hashimoto <hashimoto@chromium.org>
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
diff --git a/Makefile b/Makefile
index 5920a79..f67db9b 100644
--- a/Makefile
+++ b/Makefile
@@ -3,9 +3,11 @@
 # found in the LICENSE file.
 
 CXX ?= g++
+BASE_VER = 85268
 PKG_CONFIG ?= pkg-config
 
-PC_DEPS = alsa dbus-1 dbus-glib-1 gobject-2.0 libchrome libchromeos
+PC_DEPS = alsa dbus-1 dbus-glib-1 gobject-2.0 \
+	libchrome-$(BASE_VER) libchromeos-$(BASE_VER)
 PC_CFLAGS := $(shell $(PKG_CONFIG) --cflags $(PC_DEPS))
 PC_LIBS := $(shell $(PKG_CONFIG) --libs $(PC_DEPS))