linux (and some posix): multiprocess plugins compiling.

chrome/app/chrome_dll_main.cc

Index: chrome/app/chrome_dll_main.cc
diff --git a/chrome/app/chrome_dll_main.cc b/chrome/app/chrome_dll_main.cc
index ba078ab9d1a4c27a5bbd4b791996aad81e135e5b..c916d9dd70f9cf47b4d40cd9d6e6c45776580fef 100644
--- a/chrome/app/chrome_dll_main.cc
+++ b/chrome/app/chrome_dll_main.cc
@@ -422,12 +422,16 @@ int ChromeMain(int argc, const char** argv) {
   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)