Move code in components/safe_browsing_db and chrome/browser/s_b/ under the safe_browsing namespace.

components/safe_browsing_db/util_unittest.cc

Index: components/safe_browsing_db/util_unittest.cc
diff --git a/components/safe_browsing_db/util_unittest.cc b/components/safe_browsing_db/util_unittest.cc
index d29bd3f27acf3ed5c2b7085e776fa0da88620e93..eb65fa89d6dc295ef7a954eb70d7912b2fe59b73 100644
--- a/components/safe_browsing_db/util_unittest.cc
+++ b/components/safe_browsing_db/util_unittest.cc
@@ -9,7 +9,7 @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
-namespace {
+namespace safe_browsing {
 
 bool VectorContains(const std::vector<std::string>& data,
                     const std::string& str) {
@@ -336,4 +336,4 @@ TEST(SafeBrowsingDbUtilTest, FullHashOperators) {
   EXPECT_FALSE(safe_browsing::SBFullHashLess(kHash2, kHash2));
 }
 
-}  // namespace
+}  // namespace safe_browsing