DevTools: do not use internals for highlight testing, use protocol instead.

Source/web/WebDevToolsAgentImpl.cpp

 /*
  * Copyright (C) 2010-2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 228 matching lines @@
     m_attached = true;
 }
 
 void WebDevToolsAgentImpl::detach()
 {
     blink::Platform::current()->currentThread()->removeTaskObserver(this);
 
     // Prevent controller from sending messages to the frontend.
     InspectorController* ic = inspectorController();
     ic->disconnectFrontend();
-    ic->hideHighlight();
     m_attached = false;
 }
 
 void WebDevToolsAgentImpl::didNavigate()
 {
     ClientMessageLoopAdapter::didNavigate();
 }
 
 void WebDevToolsAgentImpl::didBeginFrame(int frameId)
 {
@@ skipping 444 matching lines @@
         || commandName == InspectorBackendDispatcher::commandName(InspectorBackendDispatcher::kDebugger_removeBreakpointCmd)
         || commandName == InspectorBackendDispatcher::commandName(InspectorBackendDispatcher::kDebugger_setBreakpointsActiveCmd);
 }
 
 void WebDevToolsAgent::processPendingMessages()
 {
     PageScriptDebugServer::shared().runPendingTasks();
 }
 
 } // namespace blink