Update SupportsUserData uses with unique_ptr.

content/browser/web_contents/web_contents_impl.cc

 // 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 "content/browser/web_contents/web_contents_impl.h"
 
 #include <stddef.h>
 
 #include <cmath>
 #include <utility>
@@ skipping 5176 matching lines @@
 WebContentsImpl::GetJavaWebContents() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   return GetWebContentsAndroid()->GetJavaObject();
 }
 
 WebContentsAndroid* WebContentsImpl::GetWebContentsAndroid() {
   WebContentsAndroid* web_contents_android =
       static_cast<WebContentsAndroid*>(GetUserData(kWebContentsAndroidKey));
   if (!web_contents_android) {
     web_contents_android = new WebContentsAndroid(this);
-    SetUserData(kWebContentsAndroidKey, web_contents_android);
+    SetUserData(kWebContentsAndroidKey, base::WrapUnique(web_contents_android));
   }
   return web_contents_android;
 }
 
 void WebContentsImpl::ActivateNearestFindResult(float x,
                                                 float y) {
   GetOrCreateFindRequestManager()->ActivateNearestFindResult(x, y);
 }
 
 void WebContentsImpl::RequestFindMatchRects(int current_version) {
@@ skipping 381 matching lines @@
     RenderViewHost* render_view_host = RenderViewHost::From(render_widget_host);
     if (!render_view_host)
       continue;
     render_view_host_set.insert(render_view_host);
   }
   for (RenderViewHost* render_view_host : render_view_host_set)
     render_view_host->OnWebkitPreferencesChanged();
 }
 
 }  // namespace content