Setup the delegate in Chrome, so we may put chrome java functions we need in blimp to the delegate …

blimp/client/core/blimp_client_context_impl.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BLIMP_CLIENT_CORE_BLIMP_CLIENT_CONTEXT_IMPL_H_
 #define BLIMP_CLIENT_CORE_BLIMP_CLIENT_CONTEXT_IMPL_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 15 matching lines @@
 // the blimp client.
 class BlimpClientContextImpl : public BlimpClientContext,
                                public NetworkEventObserver {
  public:
   // The |io_thread_task_runner| must be the task runner to use for IO
   // operations.
   explicit BlimpClientContextImpl(
       scoped_refptr<base::SingleThreadTaskRunner> io_thread_task_runner);
   ~BlimpClientContextImpl() override;
 
+  // Get BlimpClientContextDelegate which contains embedder callbacks.
+  BlimpClientContextDelegate* GetDelegate();
+
   // BlimpClientContext implementation.
   void SetDelegate(BlimpClientContextDelegate* delegate) override;
   std::unique_ptr<BlimpContents> CreateBlimpContents() override;
 
   // NetworkEventObserver implementation.
   void OnConnected() override;
   void OnDisconnected(int result) override;
 
  private:
   // Provides functionality from the embedder.
@@ skipping 14 matching lines @@
 
   base::WeakPtrFactory<BlimpClientContextImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BlimpClientContextImpl);
 };
 
 }  // namespace client
 }  // namespace blimp
 
 #endif  // BLIMP_CLIENT_CORE_BLIMP_CLIENT_CONTEXT_IMPL_H_