Modify experimental identity flow to display scope descriptions and details.

chrome/browser/extensions/api/identity/identity_api.h

Index: chrome/browser/extensions/api/identity/identity_api.h
diff --git a/chrome/browser/extensions/api/identity/identity_api.h b/chrome/browser/extensions/api/identity/identity_api.h
index 9d60a66ac26b4cc80a94902db73e903aa97f2ec6..6a7f656854cfd46f8658df1d789eec13c007cc52 100644
--- a/chrome/browser/extensions/api/identity/identity_api.h
+++ b/chrome/browser/extensions/api/identity/identity_api.h
@@ -8,6 +8,7 @@
 
 #include <string>
 
+#include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/extensions/api/identity/web_auth_flow.h"
 #include "chrome/browser/extensions/app_notify_channel_setup.h"
@@ -34,6 +35,8 @@ class GetAuthTokenFunction : public AsyncExtensionFunction,
   // OAuth2MintTokenFlow::Delegate implementation:
   virtual void OnMintTokenSuccess(const std::string& access_token) OVERRIDE;
   virtual void OnMintTokenFailure(const GoogleServiceAuthError& error) OVERRIDE;
+  virtual void OnIssueAdviceSuccess(
+      const IssueAdviceInfo& issue_advice) OVERRIDE;
 
   scoped_ptr<OAuth2MintTokenFlow> flow_;
 };