Remove deprecated gfx::Image::operator NSImage*().

chrome/browser/ui/cocoa/download/download_started_animation_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.
 //
 // This file contains the Mac implementation the download animation, displayed
 // at the start of a download. The animation produces an arrow pointing
 // downwards and animates towards the bottom of the window where the new
 // download appears in the download shelf.
 
 #include "chrome/browser/download/download_started_animation.h"
@@ skipping 78 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(DownloadAnimationWebObserver);
 };
 
 @implementation DownloadStartedAnimationMac
 
 - (id)initWithWebContents:(WebContents*)webContents {
   if ((self = [super init])) {
     // Load the image of the download arrow.
     ResourceBundle& bundle = ResourceBundle::GetSharedInstance();
-    NSImage* image = bundle.GetNativeImageNamed(IDR_DOWNLOAD_ANIMATION_BEGIN);
+    NSImage* image =
+        bundle.GetNativeImageNamed(IDR_DOWNLOAD_ANIMATION_BEGIN).ToNSImage();
 
     // Figure out the positioning in the current tab. Try to position the layer
     // against the left edge, and three times the download image's height from
     // the bottom of the tab, assuming there is enough room. If there isn't
     // enough, don't show the animation and let the shelf speak for itself.
     gfx::Rect bounds;
     webContents->GetContainerBounds(&bounds);
     imageWidth_ = [image size].width;
     CGFloat imageHeight = [image size].height;
 
@@ skipping 88 matching lines @@
 }
 
 @end
 
 void DownloadStartedAnimation::Show(WebContents* web_contents) {
   DCHECK(web_contents);
 
   // Will be deleted when the animation is complete.
   [DownloadStartedAnimationMac startAnimationWithWebContents:web_contents];
 }