fix icon toggling off bug by removing the line that disable window animation

chrome/browser/ui/cocoa/translate/translate_bubble_controller.mm

 // Copyright 2014 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/translate/translate_bubble_controller.h"
 
 #include <utility>
 
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_nsobject.h"
@@ skipping 132 matching lines @@
   NSWindow* parentWindow = [controller window];
 
   // Use an arbitrary size; it will be changed in performLayout.
   NSRect contentRect = ui::kWindowSizeDeterminedLater;
   base::scoped_nsobject<InfoBubbleWindow> window(
       [[InfoBubbleWindow alloc] initWithContentRect:contentRect
                                           styleMask:NSBorderlessWindowMask
                                             backing:NSBackingStoreBuffered
                                               defer:NO]);
 
-  // Disable animations - otherwise, the window/controller will outlive the web
-  // contents it's associated with.
-  [window setAllowedAnimations:info_bubble::kAnimateNone];
-
   if ((self = [super initWithWindow:window
                        parentWindow:parentWindow
                          anchoredAt:NSZeroPoint])) {
     webContents_ = webContents;
     model_ = std::move(model);
 
     shouldAlwaysTranslate_ = model_->ShouldAlwaysTranslate();
     if (!webContents_->GetBrowserContext()->IsOffTheRecord()) {
       shouldAlwaysTranslate_ =
           model_->ShouldAlwaysTranslateBeCheckedByDefault();
@@ skipping 712 matching lines @@
 // source or target language on the before translate view.
 - (BOOL)textView:(NSTextView*)aTextView
     clickedOnLink:(id)link
           atIndex:(NSUInteger)charIndex {
   translate::ReportUiAction(translate::ADVANCED_LINK_CLICKED);
   [self switchView:TranslateBubbleModel::VIEW_STATE_ADVANCED];
   return YES;
 }
 
 @end