Clamp focus ring opacity to avoid debug-mode failures

chrome/browser/chromeos/ui/accessibility_focus_ring_controller.cc

Index: chrome/browser/chromeos/ui/accessibility_focus_ring_controller.cc
diff --git a/chrome/browser/chromeos/ui/accessibility_focus_ring_controller.cc b/chrome/browser/chromeos/ui/accessibility_focus_ring_controller.cc
index 07cef1b44152e68196f3c458292bacf4a6d911a0..62ac28a0beaadf7d660b3f505000b8aa97d61ec7 100644
--- a/chrome/browser/chromeos/ui/accessibility_focus_ring_controller.cc
+++ b/chrome/browser/chromeos/ui/accessibility_focus_ring_controller.cc
@@ -437,15 +437,14 @@ void AccessibilityFocusRingController::ComputeOpacity(
   float opacity;
   if (start_delta < fade_in_time) {
     opacity = start_delta.InSecondsF() / fade_in_time.InSecondsF();
-    if (opacity > 1.0)
-      opacity = 1.0;
   } else {
     opacity = 1.0 - (change_delta.InSecondsF() /
                      (fade_in_time + fade_out_time).InSecondsF());
-    if (opacity < 0.0)
-      opacity = 0.0;
   }
 
+  // Layer::SetOpacity will throw an error if we're not within 0...1.
+  opacity = std::min(std::max(opacity, 0.0f), 1.0f);
+
   animation_info->opacity = opacity;
 }