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

components/safe_browsing_db/prefix_set_unittest.cc

Index: components/safe_browsing_db/prefix_set_unittest.cc
diff --git a/components/safe_browsing_db/prefix_set_unittest.cc b/components/safe_browsing_db/prefix_set_unittest.cc
index 08f639a93d9828eab6b0efa91350817b202f1e8d..181efc7749411a7dabee8ef0322ef37b863f07a3 100644
--- a/components/safe_browsing_db/prefix_set_unittest.cc
+++ b/components/safe_browsing_db/prefix_set_unittest.cc
@@ -23,6 +23,8 @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
+namespace safe_browsing {
+
 namespace {
 
 const SBPrefix kHighBitClear = 1000u * 1000u * 1000u;
@@ -30,8 +32,6 @@ const SBPrefix kHighBitSet = 3u * 1000u * 1000u * 1000u;
 
 }  // namespace
 
-namespace safe_browsing {
-
 class PrefixSetTest : public PlatformTest {
  protected:
   // Constants for the v1 format.