[Extensions Mac] Implement developer mode warning on mac

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

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTAINER_VIEW_
 #define CHROME_BROWSER_UI_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTAINER_VIEW_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/scoped_nsobject.h"
@@ skipping 55 matching lines @@
   // Whether the user is allowed to drag the grippy to the right. NO if all
   // extensions are hidden.
   BOOL canDragRight_;
 
   // When the left grippy is pinned, resizing the window has no effect on its
   // position. This prevents it from overlapping with other elements as well
   // as letting the container expand when the window is going from super small
   // 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_;
 
   // The size delegate, if any.
   // Weak; delegate is responsible for adding/removing itself.
   BrowserActionsContainerViewSizeDelegate* sizeDelegate_;
 
   base::scoped_nsobject<NSViewAnimation> resizeAnimation_;
 }
 
 // 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;
 
 // Returns the frame of the container after the running animation has finished.
 // If no animation is running, returns the container's current frame.
 - (NSRect)animationEndFrame;
 
 // Returns true if the view is animating.
 - (BOOL)isAnimating;
 
 // Stops any animation in progress.
 - (void)stopAnimation;
 
 @property(nonatomic) BOOL canDragLeft;
 @property(nonatomic) BOOL canDragRight;
 @property(nonatomic) BOOL grippyPinned;
 @property(nonatomic,getter=isResizable) BOOL resizable;
 @property(nonatomic) CGFloat maxDesiredWidth;
 @property(readonly, nonatomic) BOOL userIsResizing;
 @property(nonatomic) BrowserActionsContainerViewSizeDelegate* delegate;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTAINER_VIEW_