Add mojo/c/system/{time.h,wait.h}.

mojo/edk/embedder/entrypoints.cc

Index: mojo/edk/embedder/entrypoints.cc
diff --git a/mojo/edk/embedder/entrypoints.cc b/mojo/edk/embedder/entrypoints.cc
index b6205cebe9f183be96f698182455c57e22e0caeb..7ee0c9e53f9fcf6fe843ac688eca6ec92bd7a45a 100644
--- a/mojo/edk/embedder/entrypoints.cc
+++ b/mojo/edk/embedder/entrypoints.cc
@@ -6,8 +6,10 @@
 #include "mojo/edk/system/core.h"
 #include "mojo/public/c/system/buffer.h"
 #include "mojo/public/c/system/data_pipe.h"
-#include "mojo/public/c/system/functions.h"
+#include "mojo/public/c/system/handle.h"
 #include "mojo/public/c/system/message_pipe.h"
+#include "mojo/public/c/system/time.h"
+#include "mojo/public/c/system/wait.h"
 
 using mojo::embedder::internal::g_core;
 using mojo::system::MakeUserPointer;
@@ -24,9 +26,9 @@ MojoResult MojoClose(MojoHandle handle) {
 }
 
 MojoResult MojoWait(MojoHandle handle,
-                       MojoHandleSignals signals,
-                       MojoDeadline deadline,
-                       MojoHandleSignalsState* signals_state) {
+                    MojoHandleSignals signals,
+                    MojoDeadline deadline,
+                    MojoHandleSignalsState* signals_state) {
   return g_core->Wait(handle, signals, deadline,
                       MakeUserPointer(signals_state));
 }