cros: Simple password view for lock. Adds test support.

ash/system/tray/size_range_layout.h

Index: ash/system/tray/size_range_layout.h
diff --git a/ash/system/tray/size_range_layout.h b/ash/system/tray/size_range_layout.h
index 82d355dff132ff5f11d3809cf7e769a478497668..fef6766a2bbd58c691903341744f3a48e2880e3f 100644
--- a/ash/system/tray/size_range_layout.h
+++ b/ash/system/tray/size_range_layout.h
@@ -45,6 +45,9 @@ class ASH_EXPORT SizeRangeLayout : public views::LayoutManager {
   // Create a layout with no minimum or maximum preferred size.
   SizeRangeLayout();
 
+  // Create a layout using the given size set as the minimum and maximum sizes.
+  SizeRangeLayout(const gfx::Size& size);
+
   // Create a layout with the given minimum and maximum preferred sizes. If
   // |max_size| is smaller than |min_size| then |min_size| will be set to the
   // smaller |max_size| value.