DevTools: generate string16-based handlers for v8_inspector.

third_party/WebKit/Source/web/InspectorEmulationAgent.h

 // Copyright 2015 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 InspectorEmulationAgent_h
 #define InspectorEmulationAgent_h
 
 #include "core/inspector/InspectorBaseAgent.h"
 
 namespace blink {
 
 class WebLocalFrameImpl;
 class WebViewImpl;
 
-using ErrorString = String;
-
 class InspectorEmulationAgent final : public InspectorBaseAgent<InspectorEmulationAgent, protocol::Frontend::Emulation>, public protocol::Dispatcher::EmulationCommandHandler {
     WTF_MAKE_NONCOPYABLE(InspectorEmulationAgent);
 public:
     class Client {
     public:
         virtual ~Client() {}
 
         virtual void setCPUThrottlingRate(double rate) {}
     };
 
@@ skipping 18 matching lines @@
     InspectorEmulationAgent(WebLocalFrameImpl*, Client*);
     WebViewImpl* webViewImpl();
 
     RawPtrWillBeMember<WebLocalFrameImpl> m_webLocalFrameImpl;
     Client* m_client;
 };
 
 } // namespace blink
 
 #endif // !defined(InspectorEmulationAgent_h)