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

chrome/browser/safe_browsing/protocol_manager.h

Index: chrome/browser/safe_browsing/protocol_manager.h
diff --git a/chrome/browser/safe_browsing/protocol_manager.h b/chrome/browser/safe_browsing/protocol_manager.h
index bfbd2c1f8abd993d2cea4e1d0dd9c3545215ee05..71088efb7419a8c67279182e32af1245cfeebd15 100644
--- a/chrome/browser/safe_browsing/protocol_manager.h
+++ b/chrome/browser/safe_browsing/protocol_manager.h
@@ -37,6 +37,8 @@ class URLFetcher;
 class URLRequestContextGetter;
 }  // namespace net
 
+namespace safe_browsing {
+
 class SBProtocolManagerFactory;
 class SafeBrowsingProtocolManagerDelegate;
 
@@ -439,4 +441,6 @@ class SafeBrowsingProtocolManagerDelegate {
       scoped_ptr<std::vector<SBChunkDelete> > chunk_deletes) = 0;
 };
 
+}  // namespace safe_browsing
+
 #endif  // CHROME_BROWSER_SAFE_BROWSING_PROTOCOL_MANAGER_H_