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

chrome/browser/safe_browsing/ui_manager.h

Index: chrome/browser/safe_browsing/ui_manager.h
diff --git a/chrome/browser/safe_browsing/ui_manager.h b/chrome/browser/safe_browsing/ui_manager.h
index 8d3dba3066612318687b796620cfb8e459addcaa..1fad9299624ab31f6e7c325abdd6ce1e374b7db6 100644
--- a/chrome/browser/safe_browsing/ui_manager.h
+++ b/chrome/browser/safe_browsing/ui_manager.h
@@ -19,8 +19,6 @@
 #include "chrome/browser/safe_browsing/safe_browsing_util.h"
 #include "url/gurl.h"
 
-class SafeBrowsingService;
-
 namespace base {
 class Thread;
 }  // namespace base
@@ -29,6 +27,10 @@ namespace net {
 class SSLInfo;
 }  // namespace net
 
+namespace safe_browsing {
+
+class SafeBrowsingService;
+
 // Construction needs to happen on the main thread.
 class SafeBrowsingUIManager
     : public base::RefCountedThreadSafe<SafeBrowsingUIManager> {
@@ -173,4 +175,6 @@ class SafeBrowsingUIManager
   DISALLOW_COPY_AND_ASSIGN(SafeBrowsingUIManager);
 };
 
+}  // namespace safe_browsing
+
 #endif  // CHROME_BROWSER_SAFE_BROWSING_UI_MANAGER_H_