Don't animate the download shelf when entering/exiting fullscreen.

chrome/browser/ui/cocoa/download/download_shelf_mac.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.
 
 #include "chrome/browser/ui/cocoa/download/download_shelf_mac.h"
 
 #include "chrome/browser/download/download_item_model.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/cocoa/download/download_item_mac.h"
 #import "chrome/browser/ui/cocoa/download/download_shelf_controller.h"
@@ skipping 10 matching lines @@
 
 bool DownloadShelfMac::IsShowing() const {
   return [shelf_controller_ isVisible] == YES;
 }
 
 bool DownloadShelfMac::IsClosing() const {
   // TODO(estade): This is never called. For now just return false.
   return false;
 }
 
-void DownloadShelfMac::DoShow() {
-  [shelf_controller_ showDownloadShelf:YES
-                          isUserAction:NO];
+void DownloadShelfMac::DoOpen() {
+  [shelf_controller_ showDownloadShelf:YES isUserAction:NO animate:YES];
   browser_->UpdateDownloadShelfVisibility(true);
 }
 
 void DownloadShelfMac::DoClose(CloseReason reason) {
   [shelf_controller_ showDownloadShelf:NO
-                          isUserAction:reason == USER_ACTION];
+                          isUserAction:reason == USER_ACTION
+                               animate:YES];
   browser_->UpdateDownloadShelfVisibility(false);
 }
 
+void DownloadShelfMac::DoHide() {
+  [shelf_controller_ showDownloadShelf:NO isUserAction:NO animate:NO];
+  browser_->UpdateDownloadShelfVisibility(false);
+}
+
+void DownloadShelfMac::DoUnhide() {
+  [shelf_controller_ showDownloadShelf:YES isUserAction:NO animate:NO];
+  browser_->UpdateDownloadShelfVisibility(true);
+}
+
 Browser* DownloadShelfMac::browser() const {
   return browser_;
 }