Move init to libbase logging.

Change-Id: Ibfbefeff587a69e948978a037c555fd12a5ade6a
diff --git a/init/signal_handler.cpp b/init/signal_handler.cpp
index ea483d4..0dea3e0 100644
--- a/init/signal_handler.cpp
+++ b/init/signal_handler.cpp
@@ -47,7 +47,7 @@
 
 static void SIGCHLD_handler(int) {
     if (TEMP_FAILURE_RETRY(write(signal_write_fd, "1", 1)) == -1) {
-        ERROR("write(signal_write_fd) failed: %s\n", strerror(errno));
+        PLOG(ERROR) << "write(signal_write_fd) failed";
     }
 }
 
@@ -55,7 +55,7 @@
     // Create a signalling mechanism for SIGCHLD.
     int s[2];
     if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_NONBLOCK | SOCK_CLOEXEC, 0, s) == -1) {
-        ERROR("socketpair failed: %s\n", strerror(errno));
+        PLOG(ERROR) << "socketpair failed";
         exit(1);
     }