1 files changed, 32 insertions, 0 deletions
diff --git a/chromium/ui/base/x/x11_display_util.h b/chromium/ui/base/x/x11_display_util.h
new file mode 100644
index 00000000000..8d16263c232
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+++ b/chromium/ui/base/x/x11_display_util.h
@@ -0,0 +1,32 @@
+// Copyright 2018 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.
+
+#ifndef UI_BASE_X_X11_DISPLAY_UTIL_H_
+#define UI_BASE_X_X11_DISPLAY_UTIL_H_
+
+#include "ui/base/x/ui_base_x_export.h"
+#include "ui/display/display.h"
+#include "ui/gfx/x/x11_types.h"
+
+namespace ui {
+
+// Return the version for xrandr. It multiplies the major number by 100 and
+// adds the minor like MAJOR * 100 + MINOR. It returns zero if no xrandr is
+// present.
+UI_BASE_X_EXPORT int GetXrandrVersion(XDisplay* xdisplay);
+
+// Builds a list of displays for fallback.
+UI_BASE_X_EXPORT std::vector<display::Display> GetFallbackDisplayList(
+    float scale);
+
+// Builds a list of displays from the current screen information offered by
+// the X server.
+UI_BASE_X_EXPORT std::vector<display::Display> BuildDisplaysFromXRandRInfo(
+    int version,
+    float scale,
+    int64_t* primary_display_index_out);
+
+}  // namespace ui
+
+#endif  // UI_BASE_X_X11_DISPLAY_UTIL_H_