Update SupportsUserData uses with unique_ptr.

content/browser/site_instance_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/site_instance_impl.h"
 
+#include "base/memory/ptr_util.h"
 #include "content/browser/browsing_instance.h"
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/frame_host/debug_urls.h"
 #include "content/browser/frame_host/frame_tree_node.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/storage_partition_impl.h"
 #include "content/common/site_isolation_policy.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/render_process_host_factory.h"
 #include "content/public/browser/web_ui_controller_factory.h"
@@ skipping 127 matching lines @@
 }  // namespace
 
 RenderProcessHost* SiteInstanceImpl::GetDefaultSubframeProcessHost(
     BrowserContext* browser_context,
     bool is_for_guests_only) {
   DefaultSubframeProcessHostHolder* holder =
       static_cast<DefaultSubframeProcessHostHolder*>(
           browser_context->GetUserData(&kDefaultSubframeProcessHostHolderKey));
   if (!holder) {
     holder = new DefaultSubframeProcessHostHolder(browser_context);
-    browser_context->SetUserData(kDefaultSubframeProcessHostHolderKey, holder);
+    browser_context->SetUserData(kDefaultSubframeProcessHostHolderKey,
+                                 base::WrapUnique(holder));
   }
 
   return holder->GetProcessHost(this, is_for_guests_only);
 }
 
 RenderProcessHost* SiteInstanceImpl::GetProcess() {
   // TODO(erikkay) It would be nice to ensure that the renderer type had been
   // properly set before we get here.  The default tab creation case winds up
   // with no site set at this point, so it will default to TYPE_NORMAL.  This
   // may not be correct, so we'll wind up potentially creating a process that
@@ skipping 356 matching lines @@
             browsing_instance_->browser_context(), site_))
       return;
 
     ChildProcessSecurityPolicyImpl* policy =
         ChildProcessSecurityPolicyImpl::GetInstance();
     policy->LockToOrigin(process_->GetID(), site_);
   }
 }
 
 }  // namespace content