Remove devtools_bridge component

components/devtools_bridge/abstract_data_channel.h

-// Copyright 2014 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 COMPONENTS_DEVTOOLS_BRIDGE_ABSTRACT_DATA_CHANNEL_H_
-#define COMPONENTS_DEVTOOLS_BRIDGE_ABSTRACT_DATA_CHANNEL_H_
-
-#include <string>
-
-#include "base/callback.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-
-namespace devtools_bridge {
-
-/**
- * WebRTC DataChannel adapter for DevTools bridge. Not thread safe.
- */
-class AbstractDataChannel {
- public:
-  AbstractDataChannel() {}
-  virtual ~AbstractDataChannel() {}
-
-  /**
-   * Called on WebRTC signaling thread.
-   */
-  class Observer {
-   public:
-    Observer() {}
-    virtual ~Observer() {}
-
-    virtual void OnOpen() = 0;
-    virtual void OnClose() = 0;
-
-    virtual void OnMessage(const void* data, size_t length) = 0;
-
-   private:
-    DISALLOW_COPY_AND_ASSIGN(Observer);
-  };
-
-  /**
-   * Proxy for accessing data channel from a different thread.
-   * May outlive data channel (methods will have no effect if DataChannel
-   * destroyed).
-   */
-  class Proxy : public base::RefCountedThreadSafe<Proxy> {
-   public:
-    virtual void SendBinaryMessage(const void* data, size_t length) = 0;
-    virtual void Close() = 0;
-
-   protected:
-    Proxy() {}
-    virtual ~Proxy() {}
-
-   private:
-    friend class base::RefCountedThreadSafe<Proxy>;
-
-    DISALLOW_COPY_AND_ASSIGN(Proxy);
-  };
-
-  virtual void RegisterObserver(scoped_ptr<Observer> observer) = 0;
-  virtual void UnregisterObserver() = 0;
-
-  virtual void SendBinaryMessage(void* data, size_t length) = 0;
-  virtual void SendTextMessage(void* data, size_t length) = 0;
-
-  virtual void Close() = 0;
-
-  virtual scoped_refptr<Proxy> proxy() = 0;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(AbstractDataChannel);
-};
-
-}  // namespace devtools_bridge
-
-#endif  // COMPONENTS_DEVTOOLS_BRIDGE_ABSTRACT_DATA_CHANNEL_H_