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

chrome/browser/safe_browsing/protocol_manager_helper.h

Index: chrome/browser/safe_browsing/protocol_manager_helper.h
diff --git a/chrome/browser/safe_browsing/protocol_manager_helper.h b/chrome/browser/safe_browsing/protocol_manager_helper.h
index 925ce915ce901da2f6ea5bdbbee3d8ffe6ff5608..7bb6449c9832e7784af324a2945c10e14ad8736c 100644
--- a/chrome/browser/safe_browsing/protocol_manager_helper.h
+++ b/chrome/browser/safe_browsing/protocol_manager_helper.h
@@ -13,6 +13,7 @@
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 
+namespace safe_browsing {
 
 struct SafeBrowsingProtocolConfig {
   SafeBrowsingProtocolConfig();
@@ -53,4 +54,6 @@ class SafeBrowsingProtocolManagerHelper {
   DISALLOW_IMPLICIT_CONSTRUCTORS(SafeBrowsingProtocolManagerHelper);
 };
 
+}  // namespace safe_browsing
+
 #endif  // CHROME_BROWSER_SAFE_BROWSING_PROTOCOL_MANAGER_HELPER_H_