Move content's a plugin, ppapi_plugin, utility, and worker subdirectories to the content namespace.

content/zygote/zygote_main_linux.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <dlfcn.h>
 #include <fcntl.h>
 #include <pthread.h>
 #include <stdio.h>
 #include <sys/socket.h>
 #include <sys/stat.h>
@@ skipping 301 matching lines @@
     // once all of our childs are dead. Since we're init we need to reap childs
     // as they come.
     struct sigaction action;
     memset(&action, 0, sizeof(action));
     action.sa_handler = &SIGCHLDHandler;
     CHECK(sigaction(SIGCHLD, &action, NULL) == 0);
 
     (void) HANDLE_EINTR(close(sync_fds[0]));
     shutdown(sync_fds[1], SHUT_RD);
     // This "magic" socket must only appear in one process.
-    (void) HANDLE_EINTR(close(content::kZygoteIdFd));
+    (void) HANDLE_EINTR(close(kZygoteIdFd));
     // Tell the child to continue
     CHECK(HANDLE_EINTR(send(sync_fds[1], "C", 1, MSG_NOSIGNAL)) == 1);
     (void) HANDLE_EINTR(close(sync_fds[1]));
 
     for (;;) {
       // Loop until we have reaped our one natural child
       siginfo_t reaped_child_info;
       int wait_ret =
         HANDLE_EINTR(waitid(P_ALL, 0, &reaped_child_info, WEXITED));
       if (wait_ret)
@@ skipping 156 matching lines @@
   }
 
   int sandbox_flags = linux_sandbox->GetStatus();
 
   Zygote zygote(sandbox_flags, forkdelegate);
   // This function call can return multiple times, once per fork().
   return zygote.ProcessRequests();
 }
 
 }  // namespace content