[Sync] Fix namespaces for the sync_sessions component.

chrome/browser/sync/glue/synced_tab_delegate_android.h

Index: chrome/browser/sync/glue/synced_tab_delegate_android.h
diff --git a/chrome/browser/sync/glue/synced_tab_delegate_android.h b/chrome/browser/sync/glue/synced_tab_delegate_android.h
index e72c8f27a72a2a82c02b6c18c864636df665547d..5b9bc37f66e9f3e87aa372f27f92f8f2f20a320a 100644
--- a/chrome/browser/sync/glue/synced_tab_delegate_android.h
+++ b/chrome/browser/sync/glue/synced_tab_delegate_android.h
@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_SYNC_GLUE_SYNCED_TAB_DELEGATE_ANDROID_H_
 
 #include <string>
+#include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
@@ -24,7 +25,7 @@ namespace browser_sync {
 
 // SyncedTabDelegateAndroid wraps TabContentsSyncedTabDelegate and provides
 // a method to set web contents later when tab is brought to memory.
-class SyncedTabDelegateAndroid : public browser_sync::SyncedTabDelegate {
+class SyncedTabDelegateAndroid : public sync_sessions::SyncedTabDelegate {
  public:
   explicit SyncedTabDelegateAndroid(TabAndroid* owning_tab_);
   ~SyncedTabDelegateAndroid() override;