nit: Pass ownership of CVDelegate to ContentVerifier using unique_ptr.

extensions/browser/content_verifier.cc

 // 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.
 
 #include "extensions/browser/content_verifier.h"
 
 #include <algorithm>
 #include <utility>
 #include <vector>
 
@@ skipping 42 matching lines @@
       base::JoinString(parts, base::FilePath::StringType(1, '/')));
 }
 
 }  // namespace
 
 // static
 void ContentVerifier::SetObserverForTests(TestObserver* observer) {
   g_test_observer = observer;
 }
 
-ContentVerifier::ContentVerifier(content::BrowserContext* context,
-                                 ContentVerifierDelegate* delegate)
+ContentVerifier::ContentVerifier(
+    content::BrowserContext* context,
+    std::unique_ptr<ContentVerifierDelegate> delegate)
     : shutdown_(false),
       context_(context),
-      delegate_(delegate),
+      delegate_(std::move(delegate)),
       fetcher_(new ContentHashFetcher(
           content::BrowserContext::GetDefaultStoragePartition(context)
               ->GetURLRequestContext(),
-          delegate,
+          delegate_.get(),
           base::Bind(&ContentVerifier::OnFetchComplete, this))),
       observer_(this),
       io_data_(new ContentVerifierIOData) {}
 
 ContentVerifier::~ContentVerifier() {
 }
 
 void ContentVerifier::Start() {
   ExtensionRegistry* registry = ExtensionRegistry::Get(context_);
   observer_.Add(registry);
@@ skipping 202 matching lines @@
           !extension_l10n_util::ShouldSkipValidation(
               locales_dir, full_path.DirName(), *all_locales))
         continue;
     }
     return true;
   }
   return false;
 }
 
 }  // namespace extensions