linux (and some posix): multiprocess plugins compiling.

chrome/app/chrome_dll_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.
 
 // TODO(port): the ifdefs in here are a first step towards trying to determine
 // the correct abstraction for all the OS functionality required at this
 // stage of process initialization. It should not be taken as a final
 // abstraction.
 
 #include "build/build_config.h"
@@ skipping 404 matching lines @@
   startup_timer.Stop();  // End of Startup Time Measurement.
 
   MainFunctionParams main_params(parsed_command_line, sandbox_wrapper,
                                  &autorelease_pool);
 
   // TODO(port): turn on these main() functions as they've been de-winified.
   int rv = -1;
   if (process_type == switches::kRendererProcess) {
     rv = RendererMain(main_params);
   } else if (process_type == switches::kPluginProcess) {
-#if defined(OS_WIN)
+#if defined(OS_WIN) || defined(OS_LINUX)
     rv = PluginMain(main_params);
+#else
+    NOTIMPLEMENTED();
 #endif
   } else if (process_type == switches::kWorkerProcess) {
 #if defined(OS_WIN)
     rv = WorkerMain(main_params);
+#else
+    NOTIMPLEMENTED();
 #endif
   } else if (process_type.empty()) {
 #if defined(OS_LINUX)
     // Glib/GDK type system and threading initializations. Needed at
     // least for gconf usage in net/proxy/proxy_config_service_linux.cc.
     // TODO(sdoyon): confirm whether gconf truly needs this. If so,
     // the GTK main loop (message pump) must also be made to call
     // gdk_threads_enter/leave(). Similar issue with the clipboard
     // (estade@ deanm@).
     g_type_init();
@@ skipping 19 matching lines @@
   _CrtDumpMemoryLeaks();
 #endif  // _CRTDBG_MAP_ALLOC
 
   _Module.Term();
 #endif
 
   logging::CleanupChromeLogging();
 
   return rv;
 }