DevTools: merge devtools_http_handler into content - it is used in all the embedders anyways.

android_webview/native/aw_dev_tools_server.h

 // Copyright 2013 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 ANDROID_WEBVIEW_NATIVE_AW_DEV_TOOLS_SERVER_H_
 #define ANDROID_WEBVIEW_NATIVE_AW_DEV_TOOLS_SERVER_H_
 
 #include <jni.h>
 
 #include <memory>
 #include <vector>
 
 #include "base/macros.h"
 
-namespace devtools_http_handler {
-class DevToolsHttpHandler;
-}
-
 namespace android_webview {
 
 // This class controls WebView-specific Developer Tools remote debugging server.
 class AwDevToolsServer {
  public:
   AwDevToolsServer();
   ~AwDevToolsServer();
 
   // Opens linux abstract socket to be ready for remote debugging.
   void Start();
 
   // Closes debugging socket, stops debugging.
   void Stop();
 
   bool IsStarted() const;
 
  private:
-  std::unique_ptr<devtools_http_handler::DevToolsHttpHandler>
-      devtools_http_handler_;
-
+  bool is_started_;
   DISALLOW_COPY_AND_ASSIGN(AwDevToolsServer);
 };
 
 bool RegisterAwDevToolsServer(JNIEnv* env);
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_NATIVE_AW_DEV_TOOLS_SERVER_H_