[ios clean] Fixes Menu Overflow Controls UI

ios/clean/chrome/browser/ui/tools/menu_overflow_controls_stackview.mm

Index: ios/clean/chrome/browser/ui/tools/menu_overflow_controls_stackview.mm
diff --git a/ios/clean/chrome/browser/ui/tools/menu_overflow_controls_stackview.mm b/ios/clean/chrome/browser/ui/tools/menu_overflow_controls_stackview.mm
index d5c7f52804014e770c8e758a4a579bccdcd8fac8..55acb244b3d00af5cd5e91066d242773d3cfac0e 100644
--- a/ios/clean/chrome/browser/ui/tools/menu_overflow_controls_stackview.mm
+++ b/ios/clean/chrome/browser/ui/tools/menu_overflow_controls_stackview.mm
@@ -6,19 +6,29 @@
 
 #import "ios/clean/chrome/browser/ui/toolbar/toolbar_button+factory.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+namespace {
+const CGFloat kStackSpacing = 15.0;
+}
+
 @implementation MenuOverflowControlsStackView
 @synthesize shareButton = _shareButton;
 @synthesize reloadButton = _reloadButton;
 @synthesize stopButton = _stopButton;
+@synthesize starButton = _starButton;
 
 - (instancetype)init {
   if ((self = [super init])) {
-    // PLACEHOLDER: Buttons and UI config is not final and will be improved.
     [self setUpToolbarButtons];
     [self addArrangedSubview:self.shareButton];
+    [self addArrangedSubview:self.starButton];
     [self addArrangedSubview:self.stopButton];
     [self addArrangedSubview:self.reloadButton];
 
+    self.spacing = kStackSpacing;
     self.axis = UILayoutConstraintAxisHorizontal;
     self.distribution = UIStackViewDistributionFillEqually;
   }
@@ -36,6 +46,9 @@
 
   // Stop button.
   self.stopButton = [ToolbarButton stopToolbarButton];
+
+  // Star button.
+  self.starButton = [ToolbarButton starToolbarButton];
 }
 
 @end