Remove TOOLKIT_USES_GTK

chrome/browser/process_singleton_linux.cc

Index: chrome/browser/process_singleton_linux.cc
diff --git a/chrome/browser/process_singleton_linux.cc b/chrome/browser/process_singleton_linux.cc
index 0fb297f4404d5507b8630f1f03d4b6d42c9cb953..ea233be2e0bc1b7d399000407ebe63e701c58243 100644
--- a/chrome/browser/process_singleton_linux.cc
+++ b/chrome/browser/process_singleton_linux.cc
@@ -43,7 +43,7 @@
 
 #include <errno.h>
 #include <fcntl.h>
-#if defined(TOOLKIT_USES_GTK)
+#if defined(TOOLKIT_GTK)
 #include <gdk/gdk.h>
 #endif
 #include <signal.h>
@@ -873,7 +873,7 @@ ProcessSingleton::NotifyResult ProcessSingleton::NotifyOtherProcessWithTimeout(
     // The other process is shutting down, it's safe to start a new process.
     return PROCESS_NONE;
   } else if (strncmp(buf, kACKToken, arraysize(kACKToken) - 1) == 0) {
-#if defined(TOOLKIT_USES_GTK)
+#if defined(TOOLKIT_GTK)
     // Notify the window manager that we've started up; if we do not open a
     // window, GTK will not automatically call this for us.
     gdk_notify_startup_complete();