brillo: Remove dependency on icu for Brillo.

Mediaserver requires an internationalization data file that is 22 MB.
Since Brillo is headless and runs in a resource constrained environment,
remove the dependency on this file for Brillo.

BUG=25792311
TEST=mediaserver runs without /system/usr/icu/icudt56l.dat file. Audio
     playback, recording, and decoding work.

Change-Id: If397c5d75fca14b7cbc01c1a9014ae2d86649217
diff --git a/media/mediaserver/main_mediaserver.cpp b/media/mediaserver/main_mediaserver.cpp
index 4a485ed..315aff4 100644
--- a/media/mediaserver/main_mediaserver.cpp
+++ b/media/mediaserver/main_mediaserver.cpp
@@ -125,7 +125,11 @@
             prctl(PR_SET_PDEATHSIG, SIGKILL);   // if parent media.log dies before me, kill me also
             setpgid(0, 0);                      // but if I die first, don't kill my parent
         }
+#ifndef __BRILLO__
+        // Brillo is headless and very resource constrained. As such, it doesn't
+        // need an internationalization library for now.
         InitializeIcuOrDie();
+#endif
         sp<ProcessState> proc(ProcessState::self());
         sp<IServiceManager> sm = defaultServiceManager();
         ALOGI("ServiceManager: %p", sm.get());