Extract Profile-independent GCMService from GCMProfileService

chrome/browser/invalidation/invalidation_auth_provider.h

Index: chrome/browser/invalidation/invalidation_auth_provider.h
diff --git a/chrome/browser/invalidation/invalidation_auth_provider.h b/chrome/browser/invalidation/invalidation_auth_provider.h
index 33c14559d5f08cc5b27d5ea0ea0cc92532228116..a499b593a0f367cf53951ecad3c058baff47f7de 100644
--- a/chrome/browser/invalidation/invalidation_auth_provider.h
+++ b/chrome/browser/invalidation/invalidation_auth_provider.h
@@ -23,8 +23,11 @@ class InvalidationAuthProvider {
    public:
     virtual ~Observer();
 
+    // Calls when the user logs in.
+    virtual void OnInvalidationAuthLogin() {}
+
     // Called when the user logs out.
-    virtual void OnInvalidationAuthLogout() = 0;
+    virtual void OnInvalidationAuthLogout() {}
   };
 
   virtual ~InvalidationAuthProvider();
@@ -32,6 +35,9 @@ class InvalidationAuthProvider {
   // Gets the token service vending tokens for authentication to the cloud.
   virtual OAuth2TokenService* GetTokenService() = 0;
 
+  // Gets the username to use for authentication.
+  virtual std::string GetUsername() = 0;
+
   // Gets the account ID to use for authentication.
   virtual std::string GetAccountId() = 0;
 
@@ -44,6 +50,9 @@ class InvalidationAuthProvider {
  protected:
   InvalidationAuthProvider();
 
+  // Fires an OnInvalidationAuthLogin notification.
+  void FireInvalidationAuthLogin();
+
   // Fires an OnInvalidationAuthLogout notification.
   void FireInvalidationAuthLogout();