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diff --git a/chrome/browser/encryptor_unittest.cc b/chrome/browser/encryptor_unittest.cc
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+++ b/chrome/browser/encryptor_unittest.cc
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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "chrome/browser/encryptor.h"
+#include <string>
+
+#include "base/string_util.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+TEST(EncryptorTest, WideEncryptionDecryption) {
+  std::wstring plaintext;
+  std::wstring result;
+  std::string utf8_plaintext;
+  std::string utf8_result;
+  std::string ciphertext;
+
+  // test borderline cases (empty strings)
+  EXPECT_TRUE(Encryptor::EncryptWideString(plaintext, &ciphertext));
+  EXPECT_TRUE(Encryptor::DecryptWideString(ciphertext, &result));
+  EXPECT_EQ(plaintext, result);
+
+  // test a simple string
+  plaintext = L"hello";
+  EXPECT_TRUE(Encryptor::EncryptWideString(plaintext, &ciphertext));
+  EXPECT_TRUE(Encryptor::DecryptWideString(ciphertext, &result));
+  EXPECT_EQ(plaintext, result);
+
+  // test unicode
+  std::wstring::value_type wchars[] = { 0xdbeb,0xdf1b,0x4e03,0x6708,0x8849,
+                                        0x661f,0x671f,0x56db,0x597c,0x4e03,
+                                        0x6708,0x56db,0x6708,0xe407,0xdbaf,
+                                        0xdeb5,0x4ec5,0x544b,0x661f,0x671f,
+                                        0x65e5,0x661f,0x671f,0x4e94,0xd8b1,
+                                        0xdce1,0x7052,0x5095,0x7c0b,0xe586, 0};
+  plaintext = wchars;
+  utf8_plaintext = WideToUTF8(plaintext);
+  EXPECT_EQ(plaintext, UTF8ToWide(utf8_plaintext));
+  EXPECT_TRUE(Encryptor::EncryptWideString(plaintext, &ciphertext));
+  EXPECT_TRUE(Encryptor::DecryptWideString(ciphertext, &result));
+  EXPECT_EQ(plaintext, result);
+  EXPECT_TRUE(Encryptor::DecryptString(ciphertext, &utf8_result));
+  EXPECT_EQ(utf8_plaintext, WideToUTF8(result));
+
+  EXPECT_TRUE(Encryptor::EncryptString(utf8_plaintext, &ciphertext));
+  EXPECT_TRUE(Encryptor::DecryptWideString(ciphertext, &result));
+  EXPECT_EQ(plaintext, result);
+  EXPECT_TRUE(Encryptor::DecryptString(ciphertext, &utf8_result));
+  EXPECT_EQ(utf8_plaintext, WideToUTF8(result));
+}
+
+TEST(EncryptorTest, EncryptionDecryption) {
+  std::string plaintext;
+  std::string result;
+  std::string ciphertext;
+
+  // test borderline cases (empty strings)
+  EXPECT_TRUE(Encryptor::EncryptString(plaintext, &ciphertext));
+  EXPECT_TRUE(Encryptor::DecryptString(ciphertext, &result));
+  EXPECT_EQ(plaintext, result);
+
+  // test a simple string
+  plaintext = "hello";
+  EXPECT_TRUE(Encryptor::EncryptString(plaintext, &ciphertext));
+  EXPECT_TRUE(Encryptor::DecryptString(ciphertext, &result));
+  EXPECT_EQ(plaintext, result);
+
+  // Make sure it null terminates.
+  plaintext.assign("hello", 3);
+  EXPECT_TRUE(Encryptor::EncryptString(plaintext, &ciphertext));
+  EXPECT_TRUE(Encryptor::DecryptString(ciphertext, &result));
+  EXPECT_EQ(plaintext, "hel");
+}
+
+}  // namespace