Blimp OAuth2 token retreival on application start up.

blimp/client/core/blimp_client_context_impl.h

Index: blimp/client/core/blimp_client_context_impl.h
diff --git a/blimp/client/core/blimp_client_context_impl.h b/blimp/client/core/blimp_client_context_impl.h
index e108782858c9b464d5829ef7c3cc4413b5ab8a4a..c5ea551ff9f1682e4d5b13f923ca989a2c9b18a5 100644
--- a/blimp/client/core/blimp_client_context_impl.h
+++ b/blimp/client/core/blimp_client_context_impl.h
@@ -12,6 +12,7 @@
 #include "base/memory/weak_ptr.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread.h"
+#include "blimp/client/core/authenticator.h"
 #include "blimp/client/core/session/client_network_components.h"
 #include "blimp/client/core/session/network_event_observer.h"
 #include "blimp/client/public/blimp_client_context.h"
@@ -31,11 +32,17 @@ class BlimpClientContextImpl : public BlimpClientContext,
   // operations.
   explicit BlimpClientContextImpl(
       scoped_refptr<base::SingleThreadTaskRunner> io_thread_task_runner);
+
   ~BlimpClientContextImpl() override;
 
+  // Start authentication flow.
+  virtual void Connect();

[nyquist, 2016/08/10 01:20:33]

It kind of feels like this should be part of the public API of
BlimpClientContext? The C++ BlimpClientContextImplAndroid could still just call
this like now.

[xingliu, 2016/08/10 21:03:15]

Oh, this is my bad. Moved to public interface.

+
   // BlimpClientContext implementation.
   void SetDelegate(BlimpClientContextDelegate* delegate) override;
   std::unique_ptr<BlimpContents> CreateBlimpContents() override;
+  void CreateAuthenticator(
+      std::unique_ptr<IdentityProvider> identity_provider) override;
 
   // NetworkEventObserver implementation.
   void OnConnected() override;
@@ -58,6 +65,8 @@ class BlimpClientContextImpl : public BlimpClientContext,
 
   std::unique_ptr<ThreadPipeManager> thread_pipe_manager_;
 
+  std::unique_ptr<Authenticator> authenticator_;
+
   base::WeakPtrFactory<BlimpClientContextImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BlimpClientContextImpl);