Remove stl_util's deletion function use from content/.

content/browser/manifest/manifest_manager_host.h

 // 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.
 
 #ifndef CONTENT_BROWSER_MANIFEST_MANIFEST_MANAGER_HOST_H_
 #define CONTENT_BROWSER_MANIFEST_MANIFEST_MANAGER_HOST_H_
 
+#include <memory>
+
 #include "base/callback_forward.h"
 #include "base/id_map.h"
 #include "base/macros.h"
 #include "content/public/browser/web_contents_observer.h"
 
 namespace content {
 
 class RenderFrameHost;
 class WebContents;
 struct Manifest;
@@ skipping 13 matching lines @@
   // given RenderFrameHost. If the frame has no manifest or if getting it failed
   // the callback will have an empty manifest.
   void GetManifest(RenderFrameHost*, const GetManifestCallback&);
 
   // WebContentsObserver
   bool OnMessageReceived(const IPC::Message&, RenderFrameHost*) override;
   void RenderFrameDeleted(RenderFrameHost*) override;
 
  private:
   using GetCallbackMap = IDMap<GetManifestCallback, IDMapOwnPointer>;
-  using FrameGetCallbackMap = base::hash_map<RenderFrameHost*, GetCallbackMap*>;
 
   void OnRequestManifestResponse(
       RenderFrameHost*, int request_id, const GURL&, const Manifest&);
 
   // Returns the CallbackMap associated with the given RenderFrameHost, or null.
   GetCallbackMap* GetCallbackMapForFrame(RenderFrameHost*);
 
-  FrameGetCallbackMap pending_get_callbacks_;
+  base::hash_map<RenderFrameHost*, std::unique_ptr<GetCallbackMap>>
+      pending_get_callbacks_;
 
   DISALLOW_COPY_AND_ASSIGN(ManifestManagerHost);
 };
 
 } // namespace content
 
 #endif  // CONTENT_BROWSER_MANIFEST_MANIFEST_MANAGER_HOST_H_