Doc: SIGUSR1 needed when paused for debugger.

content/common/child_process.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 "content/common/child_process.h"
 
 #if defined(OS_POSIX) && !defined(OS_ANDROID)
 #include <signal.h>  // For SigUSR1Handler below.
 #endif
 
@@ skipping 115 matching lines @@
   LOG(ERROR) << label << " waiting for GDB.";
   // Wait 24 hours for a debugger to be attached to the current process.
   base::debug::WaitForDebugger(24 * 60 * 60, false);
 #else
   // TODO(playmobil): In the long term, overriding this flag doesn't seem
   // right, either use our own flag or open a dialog we can use.
   // This is just to ease debugging in the interim.
   LOG(ERROR) << label
              << " ("
              << getpid()
-             << ") paused waiting for debugger to attach @ pid";
+             << ") paused waiting for debugger to attach. "
+             << "Send SIGUSR1 to unpause.";
   // Install a signal handler so that pause can be woken.
   struct sigaction sa;
   memset(&sa, 0, sizeof(sa));
   sa.sa_handler = SigUSR1Handler;
   sigaction(SIGUSR1, &sa, NULL);
 
   pause();
 #endif  // defined(OS_ANDROID)
 #endif  // defined(OS_POSIX)
 }
 
 }  // namespace content