Page actions behave as disableable browser actions when script badges are enabled.

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

 // Copyright (c) 2012 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.
 
 #import "chrome/browser/ui/cocoa/extensions/browser_action_button.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/logging.h"
@@ skipping 255 matching lines @@
   SkBitmap image = extension_->browser_action()->GetIcon(tabId_);
   if (!image.isNull()) {
     [self setTabSpecificIcon:gfx::SkBitmapToNSImage(image)];
     [self setImage:tabSpecificIcon_];
   } else if (defaultIcon_) {
     [self setImage:defaultIcon_];
   }
 
   [[self cell] setTabId:tabId_];
 
+  bool enabled = extension_->browser_action()->GetIsVisible(tabId_);
+  [self setEnabled:enabled ? YES : NO];
+
   [self setNeedsDisplay:YES];
 
   [[NSNotificationCenter defaultCenter]
       postNotificationName:kBrowserActionButtonUpdatedNotification
       object:self];
 }
 
 - (BOOL)isAnimating {
   return [moveAnimation_ isAnimating];
 }
@@ skipping 40 matching lines @@
 }
 
 - (void)drawInteriorWithFrame:(NSRect)cellFrame inView:(NSView*)controlView {
   gfx::ScopedNSGraphicsContextSaveGState scopedGState;
   [super drawInteriorWithFrame:cellFrame inView:controlView];
   cellFrame.origin.y += kBrowserActionBadgeOriginYOffset;
   [self drawBadgeWithinFrame:cellFrame];
 }
 
 @end