Add info about user agent overrides to WebContents

chrome/browser/sessions/session_service.h

Index: chrome/browser/sessions/session_service.h
diff --git a/chrome/browser/sessions/session_service.h b/chrome/browser/sessions/session_service.h
index b5c5a3fdcfe02c2bf881af1df0c3ad12e7db88d3..82ceeddbad152e78b3ceb0f5bc65b7930011fa8c 100644
--- a/chrome/browser/sessions/session_service.h
+++ b/chrome/browser/sessions/session_service.h
@@ -220,6 +220,11 @@ class SessionService : public BaseSessionService,
                             const SessionID& tab_id,
                             const std::string& extension_app_id);
 
+  // Sets the user agent override of the specified tab.
+  void SetTabUserAgentOverride(const SessionID& window_id,
+                               const SessionID& tab_id,
+                               const std::string& user_agent_override);
+
   // Methods to create the various commands. It is up to the caller to delete
   // the returned the SessionCommand* object.
   SessionCommand* CreateSetSelectedTabInWindow(const SessionID& window_id,