Linux: Adds ACKs to ProcessSingletonLinux.

chrome/browser/process_singleton.h

Index: chrome/browser/process_singleton.h
diff --git a/chrome/browser/process_singleton.h b/chrome/browser/process_singleton.h
index 3ef620a6bcde4a923fa3dd81eb94de4c8453adf0..ed572fe46841eaf3e6e2e5a0ea5bc7fc658578cf 100644
--- a/chrome/browser/process_singleton.h
+++ b/chrome/browser/process_singleton.h
@@ -68,6 +68,12 @@ class ProcessSingleton : public NonThreadSafe {
   }
 
  private:
+#if defined(OS_WIN) || defined(OS_LINUX)
+  // Timeout for the current browser process to respond. 20 seconds should be
+  // enough. It's only used in Windows and Linux implementations.
+  static const int kTimeoutInSeconds = 20;
+#endif
+
   bool locked_;
   gfx::NativeWindow foreground_window_;
 
@@ -92,9 +98,6 @@ class ProcessSingleton : public NonThreadSafe {
   HWND remote_window_;  // The HWND_MESSAGE of another browser.
   HWND window_;  // The HWND_MESSAGE window.
 #elif defined(OS_LINUX)
-  // Set up a socket and sockaddr appropriate for messaging.
-  void SetupSocket(int* sock, struct sockaddr_un* addr);
-
   // Path in file system to the socket.
   FilePath socket_path_;