Blimp OAuth2 token retreival on application start up.

blimp/client/public/blimp_client_context.h

Index: blimp/client/public/blimp_client_context.h
diff --git a/blimp/client/public/blimp_client_context.h b/blimp/client/public/blimp_client_context.h
index 8b8638f00417f2dac943ac73c3e97b2a8873a151..969d4d573b9ad7cdcb3f647b7094ea7cc4fbfe49 100644
--- a/blimp/client/public/blimp_client_context.h
+++ b/blimp/client/public/blimp_client_context.h
@@ -57,6 +57,9 @@ class BlimpClientContext : public KeyedService {
   // Initiates the process for connecting to the engine.
   virtual void Connect(const std::string& client_auth_token) = 0;

[nyquist, 2016/08/12 05:47:05]

Should we remove this method now, and make it only part of the
BlimpClientContextImpl interface?

[xingliu, 2016/08/12 21:11:18]

Done, rename the function, and pass it as base::Callback to IdentitySource.

 
+  // Start authentication flow.

[nyquist, 2016/08/12 05:47:05]

... "and connection to engine."?

[xingliu, 2016/08/12 21:11:18]

Done.

+  virtual void Connect() = 0;
+
  protected:
   BlimpClientContext() = default;