More Mac & Linux fixes for base namespaces.

base/process_posix.cc

Index: base/process_posix.cc
===================================================================
--- base/process_posix.cc	(revision 5449)
+++ base/process_posix.cc	(working copy)
@@ -44,16 +44,16 @@
   if (process_ == 0)
     return 0;
 
-  return process_util::GetProcId(process_);
+  return GetProcId(process_);
 }
 
 bool Process::is_current() const {
-  return process_ == process_util::GetCurrentProcessHandle();
+  return process_ == GetCurrentProcessHandle();
 }
 
 // static
 Process Process::Current() {
-  return Process(process_util::GetCurrentProcessHandle());
+  return Process(GetCurrentProcessHandle());
 }
 
 }  // namspace base