Add BlimpView to a Chrome tab when Blimp is enabled.

blimp/client/core/dummy_blimp_client_context.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_DUMMY_BLIMP_CLIENT_CONTEXT_H_
 #define BLIMP_CLIENT_CORE_DUMMY_BLIMP_CLIENT_CONTEXT_H_
 
 #include "base/macros.h"
 #include "blimp/client/public/blimp_client_context.h"
 #include "blimp/client/public/contents/blimp_contents.h"
 
 namespace blimp {
 namespace client {
 
 // A dummy implementation of the BlimpClientContext which is in use by
 // embedders that do not set the GN argument |enable_blimp_client| to true.
 // It exists so that it is possible for an embedder to still have code depending
 // on the public APIs of blimp, without in fact linking in all the core code.
 class DummyBlimpClientContext : public BlimpClientContext {
  public:
   DummyBlimpClientContext();
   ~DummyBlimpClientContext() override;
 
   // BlimpClientContext implementation.
   void SetDelegate(BlimpClientContextDelegate* delegate) override;
-  std::unique_ptr<BlimpContents> CreateBlimpContents() override;
+  std::unique_ptr<BlimpContents> CreateBlimpContents(
+      gfx::NativeWindow window) override;
   void Connect() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DummyBlimpClientContext);
 };
 
 }  // namespace client
 }  // namespace blimp
 
 #endif  // BLIMP_CLIENT_CORE_DUMMY_BLIMP_CLIENT_CONTEXT_H_