DevTools: split protocol Dispatcher into Backend interface and the dispatcher itself.

third_party/WebKit/Source/modules/accessibility/InspectorAccessibilityAgent.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 InspectorAccessibilityAgent_h
 #define InspectorAccessibilityAgent_h
 
 #include "core/inspector/InspectorBaseAgent.h"
 #include "modules/ModulesExport.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace blink {
 
 class Page;
 
-class MODULES_EXPORT InspectorAccessibilityAgent : public InspectorBaseAgent<InspectorAccessibilityAgent, protocol::Frontend::Accessibility>, public protocol::Dispatcher::AccessibilityCommandHandler {
+class MODULES_EXPORT InspectorAccessibilityAgent : public InspectorBaseAgent<InspectorAccessibilityAgent, protocol::Frontend::Accessibility>, public protocol::Backend::Accessibility {
     WTF_MAKE_NONCOPYABLE(InspectorAccessibilityAgent);
 public:
     static PassOwnPtrWillBeRawPtr<InspectorAccessibilityAgent> create(Page* page)
     {
         return adoptPtrWillBeNoop(new InspectorAccessibilityAgent(page));
     }
 
     // Base agent methods.
     DECLARE_VIRTUAL_TRACE();
 
     // Protocol methods.
     void getAXNode(ErrorString*, int nodeId, Maybe<protocol::Accessibility::AXNode>* accessibilityNode) override;
 
 private:
     explicit InspectorAccessibilityAgent(Page*);
 
     RawPtrWillBeMember<Page> m_page;
 };
 
 } // namespace blink
 
 #endif // InspectorAccessibilityAgent_h