Move networking_private to src/extensions

extensions/browser/extensions_browser_client.h

Index: extensions/browser/extensions_browser_client.h
diff --git a/extensions/browser/extensions_browser_client.h b/extensions/browser/extensions_browser_client.h
index abea1ce3c92f51dd304786e4257dee5869c63c2c..0cf646682a22887639c40acf6f03296fff3b8497 100644
--- a/extensions/browser/extensions_browser_client.h
+++ b/extensions/browser/extensions_browser_client.h
@@ -88,6 +88,13 @@ class ExtensionsBrowserClient {
   virtual content::BrowserContext* GetOriginalContext(
       content::BrowserContext* context) = 0;
 
+#if defined(OS_CHROMEOS)
+  // Returns a user id hash from |context| or an empty string if no hash could
+  // be extracted.
+  virtual std::string GetUserIdHashFromContext(
+      content::BrowserContext* context) = 0;
+#endif
+
   // Returns true if |context| corresponds to a guest session.
   virtual bool IsGuestSession(content::BrowserContext* context) const = 0;