[Sync] Fix namespaces for the browser_sync component.

chrome/browser/sync/test/integration/p2p_sync_refresher.h

Index: chrome/browser/sync/test/integration/p2p_sync_refresher.h
diff --git a/chrome/browser/sync/test/integration/p2p_sync_refresher.h b/chrome/browser/sync/test/integration/p2p_sync_refresher.h
index e10b8c226691cddb98d2ca9a422128575643f6f2..f002ea561347aed65434668edbd9fe73a5aff2fc 100644
--- a/chrome/browser/sync/test/integration/p2p_sync_refresher.h
+++ b/chrome/browser/sync/test/integration/p2p_sync_refresher.h
@@ -9,7 +9,10 @@
 #include "components/sync/driver/sync_service_observer.h"
 
 class Profile;
+
+namespace browser_sync {
 class ProfileSyncService;
+}  // namespace browser_sync
 
 // This class observes ProfileSyncService events and emits refresh notifications
 // to other test profiles for any committed changes it observes.
@@ -18,7 +21,8 @@ class ProfileSyncService;
 // intended to make it easy to manage with a scoped_ptr.
 class P2PSyncRefresher : public sync_driver::SyncServiceObserver {
  public:
-  P2PSyncRefresher(Profile* profile, ProfileSyncService* sync_service);
+  P2PSyncRefresher(Profile* profile,
+                   browser_sync::ProfileSyncService* sync_service);
   ~P2PSyncRefresher() override;
 
   // Implementation of sync_driver::SyncServiceObserver
@@ -27,7 +31,7 @@ class P2PSyncRefresher : public sync_driver::SyncServiceObserver {
 
  private:
   Profile* const profile_;            // weak
-  ProfileSyncService* sync_service_;  // weak
+  browser_sync::ProfileSyncService* sync_service_;  // weak
 
   DISALLOW_COPY_AND_ASSIGN(P2PSyncRefresher);
 };