More Mac & Linux fixes for base namespaces.

base/process_util_linux.cc

Index: base/process_util_linux.cc
===================================================================
--- base/process_util_linux.cc	(revision 5446)
+++ base/process_util_linux.cc	(working copy)
@@ -275,10 +275,10 @@
                       int exit_code,
                       const ProcessFilter* filter) {
   bool exited_cleanly =
-    process_util::WaitForProcessesToExit(executable_name, wait_milliseconds,
-                                         filter);
+    WaitForProcessesToExit(executable_name, wait_milliseconds,
+                           filter);
   if (!exited_cleanly)
-    process_util::KillProcesses(executable_name, exit_code, filter);
+    KillProcesses(executable_name, exit_code, filter);
   return exited_cleanly;
 }