[Sync] Fix namespaces for the sync_sessions component.

chrome/browser/ui/sync/browser_synced_window_delegate.h

Index: chrome/browser/ui/sync/browser_synced_window_delegate.h
diff --git a/chrome/browser/ui/sync/browser_synced_window_delegate.h b/chrome/browser/ui/sync/browser_synced_window_delegate.h
index d731923f7ce11f12d261e7c10cfa02eccfc777e5..71cdcef6d3ea49844e28d19601580f9589bca208 100644
--- a/chrome/browser/ui/sync/browser_synced_window_delegate.h
+++ b/chrome/browser/ui/sync/browser_synced_window_delegate.h
@@ -18,7 +18,7 @@ class SyncedTabDelegate;
 
 // A BrowserSyncedWindowDelegate is the Browser-based implementation of
 // SyncedWindowDelegate.
-class BrowserSyncedWindowDelegate : public browser_sync::SyncedWindowDelegate {
+class BrowserSyncedWindowDelegate : public sync_sessions::SyncedWindowDelegate {
  public:
   explicit BrowserSyncedWindowDelegate(Browser* browser);
   ~BrowserSyncedWindowDelegate() override;
@@ -31,8 +31,8 @@ class BrowserSyncedWindowDelegate : public browser_sync::SyncedWindowDelegate {
   bool IsApp() const override;
   bool IsTypeTabbed() const override;
   bool IsTypePopup() const override;
-  bool IsTabPinned(const browser_sync::SyncedTabDelegate* tab) const override;
-  browser_sync::SyncedTabDelegate* GetTabAt(int index) const override;
+  bool IsTabPinned(const sync_sessions::SyncedTabDelegate* tab) const override;
+  sync_sessions::SyncedTabDelegate* GetTabAt(int index) const override;
   SessionID::id_type GetTabIdAt(int index) const override;
   bool IsSessionRestoreInProgress() const override;
   bool ShouldSync() const override;