extensions: Use stl utilities from the base namespace

extensions/browser/content_hash_tree_unittest.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_hash_tree.h"
 
 #include <memory>
 
 #include "base/stl_util.h"
 #include "crypto/secure_hash.h"
@@ skipping 25 matching lines @@
   EXPECT_EQ(node1, ComputeTreeHashRoot(nodes, 16));
 
   // Two nodes.
   std::string node2 = FakeSignatureWithSeed(2);
   nodes.push_back(node2);
 
   std::string expected(kSHA256Length, 0);
   std::unique_ptr<SecureHash> hash(SecureHash::Create(SecureHash::SHA256));
   hash->Update(node1.data(), node1.size());
   hash->Update(node2.data(), node2.size());
-  hash->Finish(string_as_array(&expected), expected.size());
+  hash->Finish(base::string_as_array(&expected), expected.size());
   EXPECT_EQ(expected, ComputeTreeHashRoot(nodes, 16));
 }
 
 TEST(ContentHashTreeTest, HashTreeMultipleLevels) {
   std::vector<std::string> nodes;
   for (int i = 0; i < 3; i++) {
     std::string node;
     nodes.push_back(FakeSignatureWithSeed(i));
   }
 
@@ skipping 13 matching lines @@
   // 1 2 3
   // where 4 is the hash of 1 and 2, 5 is the hash of 3, and 6 is the
   // hash of 4 and 5.
   std::string hash_of_first_2 = crypto::SHA256HashString(nodes[0] + nodes[1]);
   std::string hash_of_third = crypto::SHA256HashString(nodes[2]);
   expected = crypto::SHA256HashString(hash_of_first_2 + hash_of_third);
   EXPECT_EQ(expected, ComputeTreeHashRoot(nodes, 2));
 }
 
 }  // namespace extensions