Remove all blimp client code.

blimp/client/core/settings/settings_feature.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_SETTINGS_SETTINGS_FEATURE_H_
-#define BLIMP_CLIENT_CORE_SETTINGS_SETTINGS_FEATURE_H_
-
-#include "base/macros.h"
-#include "blimp/client/core/settings/settings_observer.h"
-#include "blimp/net/blimp_message_processor.h"
-
-namespace blimp {
-namespace client {
-
-class Settings;
-
-// The feature is used to send global settings to the engine.
-class SettingsFeature : public BlimpMessageProcessor, public SettingsObserver {
- public:
-  // Caller ensures |settings| outlives this object.
-  explicit SettingsFeature(Settings* settings);
-  ~SettingsFeature() override;
-
-  // Set the BlimpMessageProcessor that will be used to send
-  // BlimpMessage::SETTINGS messages to the engine.
-  void set_outgoing_message_processor(
-      std::unique_ptr<BlimpMessageProcessor> processor);
-
-  // BlimpMessageProcessor implementation.
-  void ProcessMessage(std::unique_ptr<BlimpMessage> message,
-                      const net::CompletionCallback& callback) override;
-
-  // SettingsObserver implementation.
-  void OnRecordWholeDocumentChanged(bool enable) override;
-
-  // Send the necessary settings to the engine.
-  void PushSettings();
-
- private:
-  // Used to send BlimpMessage::TAB_CONTROL messages to the engine.
-  std::unique_ptr<BlimpMessageProcessor> outgoing_message_processor_;
-
-  Settings* settings_;
-
-  DISALLOW_COPY_AND_ASSIGN(SettingsFeature);
-};
-
-}  // namespace client
-}  // namespace blimp
-
-#endif  // BLIMP_CLIENT_CORE_SETTINGS_SETTINGS_FEATURE_H_