Change Dismiss button to Discard and cancel download

chrome/browser/ui/cocoa/download/download_item_controller.mm

 // Copyright 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/download/download_item_controller.h"
 
 #include "base/mac/bundle_locations.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
@@ skipping 344 matching lines @@
 }
 
 - (IBAction)discardDownload:(id)sender {
   UMA_HISTOGRAM_LONG_TIMES("clickjacking.discard_download",
                            base::Time::Now() - creationTime_);
   DownloadItem* download = bridge_->download_model()->download();
   download->Remove();
   // WARNING: we are deleted at this point.  Don't access 'this'.
 }
 
-- (IBAction)dismissMaliciousDownload:(id)sender {
-  // ExperienceSampling: User dismissed the dangerous download.
-  [self updateExperienceSamplingEvent:ExperienceSamplingEvent::kDeny];
-  [self remove];
-  // WARNING: we are deleted at this point.
-}
-
 - (IBAction)showContextMenu:(id)sender {
   [progressView_ showContextMenu];
 }
 
 @end