chrome: Use stl utilities from the base namespace

chrome/browser/extensions/chrome_content_verifier_delegate.cc

 // Copyright 2015 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 "chrome/browser/extensions/chrome_content_verifier_delegate.h"
 
 #include <algorithm>
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 170 matching lines @@
                   << extension->name()
                   << "') due to content verification failure. In tests you "
                   << "might want to use a ScopedIgnoreContentVerifierForTest "
                   << "instance to prevent this.";
     system->extension_service()->DisableExtension(extension_id,
                                                   Extension::DISABLE_CORRUPTED);
     ExtensionPrefs::Get(context_)->IncrementCorruptedDisableCount();
     UMA_HISTOGRAM_BOOLEAN("Extensions.CorruptExtensionBecameDisabled", true);
     UMA_HISTOGRAM_ENUMERATION("Extensions.CorruptExtensionDisabledReason",
                               reason, ContentVerifyJob::FAILURE_REASON_MAX);
-  } else if (!ContainsKey(would_be_disabled_ids_, extension_id)) {
+  } else if (!base::ContainsKey(would_be_disabled_ids_, extension_id)) {
     UMA_HISTOGRAM_BOOLEAN("Extensions.CorruptExtensionWouldBeDisabled", true);
     would_be_disabled_ids_.insert(extension_id);
   }
 }
 
 void ChromeContentVerifierDelegate::LogFailureForPolicyForceInstall(
     const std::string& extension_id) {
-  if (!ContainsKey(corrupt_policy_extensions_, extension_id)) {
+  if (!base::ContainsKey(corrupt_policy_extensions_, extension_id)) {
     corrupt_policy_extensions_.insert(extension_id);
     UMA_HISTOGRAM_BOOLEAN("Extensions.CorruptPolicyExtensionWouldBeDisabled",
                           true);
   }
 }
 
 }  // namespace extensions