[Sync] Fix namespaces for the sync_sessions component.

components/sync_sessions/revisit/page_revisit_broadcaster.h

Index: components/sync_sessions/revisit/page_revisit_broadcaster.h
diff --git a/components/sync_sessions/revisit/page_revisit_broadcaster.h b/components/sync_sessions/revisit/page_revisit_broadcaster.h
index 8e56575ea6b8fa4a105d80f27ac3e938be1f76c5..bf987899b10ee434366ab87a8573cfa29ff356dc 100644
--- a/components/sync_sessions/revisit/page_revisit_broadcaster.h
+++ b/components/sync_sessions/revisit/page_revisit_broadcaster.h
@@ -15,7 +15,7 @@ namespace sync_sessions {
 class SyncSessionsClient;
 }
 
-namespace browser_sync {
+namespace sync_sessions {
 
 class SessionsSyncManager;
 
@@ -25,7 +25,7 @@ class SessionsSyncManager;
 class PageRevisitBroadcaster {
  public:
   PageRevisitBroadcaster(SessionsSyncManager* manager,
-                         sync_sessions::SyncSessionsClient* sessions_client);
+                         SyncSessionsClient* sessions_client);
   ~PageRevisitBroadcaster();
 
   // Broadcasts to all observers the given page visit event. Should only be
@@ -39,17 +39,17 @@ class PageRevisitBroadcaster {
   // observers to depend on ui/, and the high bit masks don't work for emitting
   // histograms. Some of the high bit masks correspond to cases we're
   // particularly interested in and want to treat as first class values.
-  static sync_sessions::PageVisitObserver::TransitionType ConvertTransitionEnum(
+  static PageVisitObserver::TransitionType ConvertTransitionEnum(
       const ui::PageTransition original);
 
   // The client of this sync sessions datatype.
-  sync_sessions::SyncSessionsClient* const sessions_client_;
+  SyncSessionsClient* const sessions_client_;
 
-  ScopedVector<sync_sessions::PageVisitObserver> revisit_observers_;
+  ScopedVector<PageVisitObserver> revisit_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(PageRevisitBroadcaster);
 };
 
-}  // namespace browser_sync
+}  // namespace sync_sessions
 
 #endif  // COMPONENTS_SYNC_SESSIONS_REVISIT_PAGE_REVISIT_BROADCASTER_H_