Revert of Move prefix_set and parts of s_b_util into a new component safe_browsing_db.

chrome/browser/safe_browsing/safe_browsing_util_unittest.cc

Index: chrome/browser/safe_browsing/safe_browsing_util_unittest.cc
diff --git a/chrome/browser/safe_browsing/safe_browsing_util_unittest.cc b/chrome/browser/safe_browsing/safe_browsing_util_unittest.cc
index 3c875bb93adda6e8646968743c35f375faf96ed2..62056f68592469af0cba6411ef588437429c68d1 100644
--- a/chrome/browser/safe_browsing/safe_browsing_util_unittest.cc
+++ b/chrome/browser/safe_browsing/safe_browsing_util_unittest.cc
@@ -320,4 +320,20 @@
   EXPECT_EQ(hash_in, hash_final);
 }
 
+TEST(SafeBrowsingUtilTest, 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