Remove all blimp client code.

blimp/client/test/test_blimp_client_context_delegate.cc

-// 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.
-
-#include "blimp/client/test/test_blimp_client_context_delegate.h"
-
-#include "base/memory/ptr_util.h"
-#include "blimp/client/public/blimp_client_context_delegate.h"
-
-namespace blimp {
-namespace client {
-
-TestBlimpClientContextDelegate::TestBlimpClientContextDelegate() {
-  token_service_ =
-      base::WrapUnique<FakeOAuth2TokenService>(new FakeOAuth2TokenService());
-}
-
-TestBlimpClientContextDelegate::~TestBlimpClientContextDelegate() = default;
-
-std::unique_ptr<IdentityProvider>
-TestBlimpClientContextDelegate::CreateIdentityProvider() {
-  return base::WrapUnique<IdentityProvider>(
-      new FakeIdentityProvider(token_service_.get()));
-}
-
-FakeOAuth2TokenService* TestBlimpClientContextDelegate::GetTokenService() {
-  return token_service_.get();
-}
-
-}  // namespace client
-}  // namespace blimp