Linux: use readlink() and prctl() in SetProcTitle() to fix "exe" showing in process listings.

chrome/plugin/plugin_main.cc

 // Copyright (c) 2006-2008 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 "build/build_config.h"
 
 #include "app/hi_res_timer_manager.h"
 #include "app/system_monitor.h"
 #if defined(OS_WIN)
 #include "app/win_util.h"
@@ skipping 44 matching lines @@
 #endif
   MessageLoop main_message_loop(MessageLoop::TYPE_UI);
   std::wstring app_name = chrome::kBrowserAppName;
   PlatformThread::SetName(WideToASCII(app_name + L"_PluginMain").c_str());
 
   SystemMonitor system_monitor;
   HighResolutionTimerManager high_resolution_timer_manager;
 
   const CommandLine& parsed_command_line = parameters.command_line_;
 
-#if defined(OS_WIN)
+#if defined(OS_LINUX)
+  // On Linux we exec ourselves from /proc/self/exe, but that makes the
+  // process name that shows up in "ps" etc. for plugins show as "exe"
+  // instead of "chrome" or something reasonable. Try to fix it.
+  CommandLine::SetProcTitle();
+#elif defined(OS_WIN)
   sandbox::TargetServices* target_services =
       parameters.sandbox_info_.TargetServices();
 
   CoInitialize(NULL);
   DLOG(INFO) << "Started plugin with " <<
     parsed_command_line.command_line_string();
 
   HMODULE sandbox_test_module = NULL;
   bool no_sandbox = parsed_command_line.HasSwitch(switches::kNoSandbox) ||
                     !parsed_command_line.HasSwitch(switches::kSafePlugins);
@@ skipping 41 matching lines @@
 
     MessageLoop::current()->Run();
   }
 
 #if defined(OS_WIN)
   CoUninitialize();
 #endif
 
   return 0;
 }