Bug 1433703 - Remove the libxss-based code from the screenshot tool. r=gps

It hasn't been used for a long while, and the screenshot tool is only
used for tests. So keeping the code essentially always disabled doesn't
have much value.

--HG--
extra : rebase_source : 6bf696d6543cbdd3ef66e19d4dc110134b761b63

old-configure.in

@@ -1296,14 +1296,6 @@ if test -n "$MOZ_X11"; then
     AC_CHECK_LIB(X11-xcb, XGetXCBConnection, [XLIBS="-lX11-xcb $XLIBS"],
         [MISSING_X="$MISSING_X -lX11-xcb"], $XLIBS)
 
-    dnl ========================================================
-    dnl = Check for Xss
-    dnl ========================================================
-    MOZ_CHECK_HEADER(X11/extensions/scrnsaver.h,
-        AC_CHECK_LIB(Xss, XScreenSaverQueryInfo,
-            [XSS_LIBS="-lXss $XEXT_LIBS $XLIBS"
-             AC_DEFINE(HAVE_LIBXSS)],, $XEXT_LIBS $XLIBS))
-
     LDFLAGS="$_SAVE_LDFLAGS"
     LIBS="$_SAVE_LIBS"
 fi # $MOZ_X11
@@ -1313,7 +1305,6 @@ AC_SUBST_LIST(XLDFLAGS)
 AC_SUBST_LIST(XLIBS)
 AC_SUBST_LIST(XEXT_LIBS)
 AC_SUBST_LIST(XT_LIBS)
-AC_SUBST_LIST(XSS_LIBS)
 
 dnl ========================================================
 dnl = pthread support

testing/tools/screenshot/gdk-screenshot.cpp

@@ -36,9 +36,6 @@
  */
 #include <gdk/gdk.h>
 #include <gdk/gdkx.h>
-#ifdef HAVE_LIBXSS
-#include <X11/extensions/scrnsaver.h>
-#endif
 
 #include <errno.h>
 #include <stdio.h>
@@ -60,73 +57,6 @@ int main(int argc, char** argv)
 {
   gdk_init(&argc, &argv);
 
-#if defined(HAVE_LIBXSS) && defined(MOZ_WIDGET_GTK)
-  int event_base, error_base;
-  Bool have_xscreensaver =
-    XScreenSaverQueryExtension(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()),
-                               &event_base, &error_base);
-
-  if (!have_xscreensaver) {
-    fprintf(stderr, "No XScreenSaver extension on display\n");
-  } else {
-    XScreenSaverInfo* info = XScreenSaverAllocInfo();
-    if (!info) {
-      fprintf(stderr, "%s: Out of memory\n", argv[0]);
-      return 1;
-    }
-    XScreenSaverQueryInfo(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()),
-                          GDK_ROOT_WINDOW(), info);
-
-    const char* state;
-    const char* til_or_since = nullptr;
-    switch (info->state) {
-    case ScreenSaverOff:
-      state = "Off";
-      til_or_since = "XScreenSaver will activate after another %lu seconds idle time\n";
-      break;
-    case ScreenSaverOn:
-      state = "On";
-      if (info->til_or_since) {
-        til_or_since = "XScreenSaver idle timer activated %lu seconds ago\n";
-      } else {
-        til_or_since = "XScreenSaver idle activation is disabled\n";
-      }
-      break;
-    case ScreenSaverDisabled:
-      state = "Disabled";
-      break;
-    default:
-      state = "unknown";
-    }
-
-    const char* kind;
-    switch (info->kind) {
-    case ScreenSaverBlanked:
-      kind = "Blanked";
-      break;
-    case ScreenSaverInternal:
-      state = "Internal";
-      break;
-    case ScreenSaverExternal:
-      state = "External";
-      break;
-    default:
-      state = "unknown";
-    }
-
-    fprintf(stderr, "XScreenSaver state: %s\n", state);
-
-    if (til_or_since) {
-      fprintf(stderr, "XScreenSaver kind: %s\n", kind);
-      fprintf(stderr, til_or_since, info->til_or_since / 1000);
-    }
-
-    fprintf(stderr, "User input has been idle for %lu seconds\n", info->idle / 1000);
-
-    XFree(info);
-  }
-#endif
-
   GdkPixbuf* screenshot = nullptr;
   GdkWindow* window = gdk_get_default_root_window();
   screenshot = gdk_pixbuf_get_from_window(window, 0, 0,

testing/tools/screenshot/moz.build

@@ -12,7 +12,6 @@ if 'gtk' in CONFIG['MOZ_WIDGET_TOOLKIT'] and CONFIG['MOZ_X11']:
     CXXFLAGS += CONFIG['TK_CFLAGS']
     LDFLAGS += CONFIG['XLDFLAGS']
     OS_LIBS += CONFIG['TK_LIBS']
-    OS_LIBS += CONFIG['XSS_LIBS']
 elif CONFIG['MOZ_WIDGET_TOOLKIT'] == 'windows':
     Program('screenshot')
     SOURCES += [