Download shelf autohides on showing in shell, just same as regular open

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_macros.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
@@ skipping 230 matching lines @@
 
 - (void)updateVisibility:(id)sender {
   if ([[self view] window])
     [self updateTheme:[[[self view] window] themeProvider]];
 
   NSView* view = [self view];
   NSRect containerFrame = [[view superview] frame];
   [view setHidden:(NSMaxX([view frame]) > NSWidth(containerFrame))];
 }
 
-- (void)downloadWasOpened {
-  [shelf_ downloadWasOpened:self];
+- (void)downloadWasOpenedOrShown {
+  [shelf_ downloadWasOpenedOrShown:self];
 }
 
 - (IBAction)handleButtonClick:(id)sender {
   NSEvent* event = [NSApp currentEvent];
   DownloadItem* download = [self download];
   if ([event modifierFlags] & NSCommandKeyMask) {
     // Let cmd-click show the file in Finder, like e.g. in Safari and Spotlight.
     download->ShowDownloadInShell();
   } else {
     download->OpenDownload();
@@ skipping 97 matching lines @@
   DownloadItem* download = bridge_->download_model()->download();
   download->Remove();
   // WARNING: we are deleted at this point.  Don't access 'this'.
 }
 
 - (IBAction)showContextMenu:(id)sender {
   [progressView_ showContextMenu];
 }
 
 @end