Devtools[LayoutEditor]: Pass data about property change from InspectorOverlayPage

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 472 matching lines @@
 void WebDevToolsAgentImpl::attach(const WebString& hostId)
 {
     if (m_attached)
         return;
 
     // Set the attached bit first so that sync notifications were delivered.
     m_attached = true;
 
     initializeDeferredAgents();
     m_resourceAgent->setHostId(hostId);
+    m_overlay->setCSSAgent(m_cssAgent.get());
 
     m_inspectorFrontend = adoptPtr(new InspectorFrontend(this));
     // We can reconnect to existing front-end -> unmute state.
     m_state->unmute();
     m_agents.setFrontend(m_inspectorFrontend.get());
 
     InspectorInstrumentation::registerInstrumentingAgents(m_instrumentingAgents.get());
     InspectorInstrumentation::frontendCreated();
 
     m_inspectorBackendDispatcher = InspectorBackendDispatcher::create(this);
@@ skipping 25 matching lines @@
     // Destroying agents would change the state, but we don't want that.
     // Pre-disconnect state will be used to restore inspector agents.
     m_state->mute();
     m_agents.clearFrontend();
     m_inspectorFrontend.clear();
 
     // Release overlay resources.
     m_overlay->clear();
     InspectorInstrumentation::frontendDeleted();
     InspectorInstrumentation::unregisterInstrumentingAgents(m_instrumentingAgents.get());
+    m_overlay->setCSSAgent(nullptr);

[dgozman, 2015/06/25 12:57:56]

Let's do this before instrumentation calls.

[sergeyv, 2015/06/25 13:01:40]

Done.

 
     m_attached = false;
 }
 
 void WebDevToolsAgentImpl::continueProgram()
 {
     ClientMessageLoopAdapter::continueProgram();
 }
 
 bool WebDevToolsAgentImpl::handleInputEvent(const WebInputEvent& inputEvent)
@@ skipping 193 matching lines @@
     if (!InspectorBackendDispatcher::getCommandName(message, &commandName))
         return false;
     return commandName == InspectorBackendDispatcher::commandName(InspectorBackendDispatcher::kDebugger_pauseCmd)
         || commandName == InspectorBackendDispatcher::commandName(InspectorBackendDispatcher::kDebugger_setBreakpointCmd)
         || commandName == InspectorBackendDispatcher::commandName(InspectorBackendDispatcher::kDebugger_setBreakpointByUrlCmd)
         || commandName == InspectorBackendDispatcher::commandName(InspectorBackendDispatcher::kDebugger_removeBreakpointCmd)
         || commandName == InspectorBackendDispatcher::commandName(InspectorBackendDispatcher::kDebugger_setBreakpointsActiveCmd);
 }
 
 } // namespace blink