Remove all blimp engine code

blimp/engine/feature/engine_settings_feature_unittest.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/engine/feature/engine_settings_feature.h"
-
-#include "blimp/common/create_blimp_message.h"
-#include "blimp/common/proto/blimp_message.pb.h"
-#include "blimp/common/proto/settings.pb.h"
-#include "blimp/engine/app/settings_manager.h"
-#include "net/base/test_completion_callback.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace blimp {
-namespace engine {
-
-namespace {
-
-class EngineSettingsFeatureTest : public testing::Test {
- public:
-  EngineSettingsFeatureTest() : feature_(&settings_manager_) {}
-
- protected:
-  SettingsManager settings_manager_;
-  EngineSettingsFeature feature_;
-};
-
-TEST_F(EngineSettingsFeatureTest, UpdatesSettingsCorrectly) {
-  EXPECT_FALSE(settings_manager_.GetEngineSettings().record_whole_document);
-
-  EngineSettingsMessage* engine_settings;
-  std::unique_ptr<BlimpMessage> message = CreateBlimpMessage(&engine_settings);
-  engine_settings->set_record_whole_document(true);
-
-  net::TestCompletionCallback cb;
-  feature_.ProcessMessage(std::move(message), cb.callback());
-
-  EXPECT_TRUE(settings_manager_.GetEngineSettings().record_whole_document);
-}
-
-}  // namespace
-
-}  // namespace engine
-}  // namespace blimp