Add haptic feedback for selection change and action trigger.

ios/chrome/browser/ui/overscroll_actions/overscroll_actions_view.mm

 // Copyright 2015 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 "ios/chrome/browser/ui/overscroll_actions/overscroll_actions_view.h"
 
 #import <QuartzCore/QuartzCore.h>
 
 #include "base/logging.h"
 #include "base/mac/objc_property_releaser.h"
@@ skipping 672 matching lines @@
       self.selectionCircleMaskLayer.transform =
           self.selectionCircleLayer.transform;
     }
   } else {
     // Scale selection up.
     self.selectionCircleLayer.transform = CATransform3DMakeScale(1, 1, 1);
     self.selectionCircleMaskLayer.transform =
         self.selectionCircleLayer.transform;
   }
   [UIView commitAnimations];
+
+  [self.delegate overscrollActionsView:self
+               selectedActionDidChange:self.selectedAction];
 }
 
 - (base::scoped_nsobject<NSArray>&)layersToCenterVertically {
   if (!_layersToCenterVertically) {
     NSArray* layersToCenterVertically = @[
       _selectionCircleLayer, _selectionCircleMaskLayer,
       _addTabActionImageView.layer, _refreshActionImageView.layer,
       _closeTabActionImageView.layer, _addTabActionImageViewHighlighted.layer,
       _refreshActionImageViewHighlighted.layer,
       _closeTabActionImageViewHighlighted.layer, _backgroundView.layer
@@ skipping 285 matching lines @@
   CGPoint tapLocation = [tapRecognizer locationInView:self];
   OverscrollAction action = [self actionAtLocation:tapLocation];
   if (action != OverscrollAction::NONE) {
     [self updateSelectionForTouchedAction:action];
     [self setSelectedAction:action];
     [self.delegate overscrollActionsViewDidTapTriggerAction:self];
   }
 }
 
 @end