[Extensions UI Mac] Fix race condition in showing the icon surfacing bubble

chrome/browser/ui/cocoa/extensions/browser_actions_container_view.mm

Index: chrome/browser/ui/cocoa/extensions/browser_actions_container_view.mm
diff --git a/chrome/browser/ui/cocoa/extensions/browser_actions_container_view.mm b/chrome/browser/ui/cocoa/extensions/browser_actions_container_view.mm
index 4de33c2da637480e0d84c1fb59a0768f783f4a9f..4a1de10e5e699e2f19555cf0d758debf279e198e 100644
--- a/chrome/browser/ui/cocoa/extensions/browser_actions_container_view.mm
+++ b/chrome/browser/ui/cocoa/extensions/browser_actions_container_view.mm
@@ -122,6 +122,10 @@ const CGFloat kMinimumContainerWidth = 3.0;
   }
 }
 
+- (BOOL)trackingEnabled {
+  return trackingArea_.get() != nullptr;
+}
+
 - (void)keyDown:(NSEvent*)theEvent {
   // If this is the overflow container, we handle three key events: left, right,
   // and space. Left and right navigate the actions within the container, and
@@ -175,6 +179,10 @@ const CGFloat kMinimumContainerWidth = 3.0;
   }
 }
 
+- (BOOL)isHighlighting {
+  return highlight_.get() != nullptr;
+}
+
 - (void)setIsOverflow:(BOOL)isOverflow {
   if (isOverflow_ != isOverflow) {
     isOverflow_ = isOverflow;