[Extensions Mac] Implement developer mode warning on mac

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

Index: chrome/browser/ui/cocoa/extensions/browser_actions_container_view.h
diff --git a/chrome/browser/ui/cocoa/extensions/browser_actions_container_view.h b/chrome/browser/ui/cocoa/extensions/browser_actions_container_view.h
index 09ef7eef5d6ed2ff64c6dd4a6790a5d72be72d4e..f748c17c6b1efcae04d0e37b4d75ecde4d570b23 100644
--- a/chrome/browser/ui/cocoa/extensions/browser_actions_container_view.h
+++ b/chrome/browser/ui/cocoa/extensions/browser_actions_container_view.h
@@ -73,6 +73,10 @@ class BrowserActionsContainerViewSizeDelegate {
   // to large.
   BOOL grippyPinned_;
 
+  // Whether the toolbar is currently highlighting its actions (in which case it
+  // is drawn with an orange background).
+  BOOL isHighlighting_;
+
   // A tracking area to receive mouseEntered events, if tracking is enabled.
   ui::ScopedCrTrackingArea trackingArea_;
 
@@ -86,6 +90,9 @@ class BrowserActionsContainerViewSizeDelegate {
 // Sets whether or not tracking (for mouseEntered events) is enabled.
 - (void)setTrackingEnabled:(BOOL)enabled;
 
+// Sets whether or not the container is highlighting.
+- (void)setIsHighlighting:(BOOL)isHighlighting;
+
 // Resizes the container to the given ideal width, optionally animating.
 - (void)resizeToWidth:(CGFloat)width animate:(BOOL)animate;