Move prefix_set and parts of safe_browsing_util into a new component safe_browsing_db.

components/safe_browsing_db/safe_browsing_db_util_unittest.cc

Index: components/safe_browsing_db/safe_browsing_db_util_unittest.cc
diff --git a/components/safe_browsing_db/safe_browsing_db_util_unittest.cc b/components/safe_browsing_db/safe_browsing_db_util_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..9af7d58cff9bb1fa0772c65180c57405ea02a79e
--- /dev/null
+++ b/components/safe_browsing_db/safe_browsing_db_util_unittest.cc
@@ -0,0 +1,28 @@
+// Copyright (c) 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 <algorithm>
+
+#include "components/safe_browsing_db/safe_browsing_db_util.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+TEST(SafeBrowsingDbUtilTest, FullHashOperators) {
+  const SBFullHash kHash1 = SBFullHashForString("one");
+  const SBFullHash kHash2 = SBFullHashForString("two");
+
+  EXPECT_TRUE(SBFullHashEqual(kHash1, kHash1));
+  EXPECT_TRUE(SBFullHashEqual(kHash2, kHash2));
+  EXPECT_FALSE(SBFullHashEqual(kHash1, kHash2));
+  EXPECT_FALSE(SBFullHashEqual(kHash2, kHash1));
+
+  EXPECT_FALSE(SBFullHashLess(kHash1, kHash2));
+  EXPECT_TRUE(SBFullHashLess(kHash2, kHash1));
+
+  EXPECT_FALSE(SBFullHashLess(kHash1, kHash1));
+  EXPECT_FALSE(SBFullHashLess(kHash2, kHash2));
+}
+
+}  // namespace