[sessions] Properly namespace recently-componentized TabRestore code

chrome/browser/sessions/chrome_tab_restore_service_client.h

Index: chrome/browser/sessions/chrome_tab_restore_service_client.h
diff --git a/chrome/browser/sessions/chrome_tab_restore_service_client.h b/chrome/browser/sessions/chrome_tab_restore_service_client.h
index 4bd2c421a9ed89afb625837ba275c4750dd9250a..ad7c20f560e5688e93353490fd55f5e076fcef73 100644
--- a/chrome/browser/sessions/chrome_tab_restore_service_client.h
+++ b/chrome/browser/sessions/chrome_tab_restore_service_client.h
@@ -19,12 +19,12 @@ class ChromeTabRestoreServiceClient : public sessions::TabRestoreServiceClient {
 
  private:
   // TabRestoreServiceClient:
-  TabRestoreServiceDelegate* CreateTabRestoreServiceDelegate(
+  sessions::TabRestoreServiceDelegate* CreateTabRestoreServiceDelegate(
       int host_desktop_type,
       const std::string& app_name) override;
-  TabRestoreServiceDelegate* FindTabRestoreServiceDelegateForTab(
+  sessions::TabRestoreServiceDelegate* FindTabRestoreServiceDelegateForTab(
       const sessions::LiveTab* tab) override;
-  TabRestoreServiceDelegate* FindTabRestoreServiceDelegateWithID(
+  sessions::TabRestoreServiceDelegate* FindTabRestoreServiceDelegateWithID(
       SessionID::id_type desired_id,
       int host_desktop_type) override;
   bool ShouldTrackURLForRestore(const GURL& url) override;