DevTools: simplify JSONValues API, prepare to the OwnPtr migration.

third_party/WebKit/Source/core/inspector/InspectorDOMDebuggerAgent.cpp

 /*
  * Copyright (C) 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 165 matching lines @@
 
 void InspectorDOMDebuggerAgent::setInstrumentationBreakpoint(ErrorString* error, const String& eventName)
 {
     setBreakpoint(error, String(instrumentationEventCategoryType) + eventName, String());
 }
 
 static PassRefPtr<JSONObject> ensurePropertyObject(PassRefPtr<JSONObject> object, const String& propertyName)
 {
     JSONObject::iterator it = object->find(propertyName);
     if (it != object->end())
-        return it->value->asObject();
+        return JSONObject::cast(it->value);
 
     RefPtr<JSONObject> result = JSONObject::create();
     object->setObject(propertyName, result);
     return result.release();
 }
 
 PassRefPtr<JSONObject> InspectorDOMDebuggerAgent::eventListenerBreakpoints()
 {
     RefPtr<JSONObject> breakpoints = m_state->getObject(DOMDebuggerAgentState::eventListenerBreakpoints);
     if (!breakpoints) {
@@ skipping 333 matching lines @@
 }
 
 PassRefPtr<JSONObject> InspectorDOMDebuggerAgent::preparePauseOnNativeEventData(const String& eventName, const String* targetName)
 {
     String fullEventName = (targetName ? listenerEventCategoryType : instrumentationEventCategoryType) + eventName;
     RefPtr<JSONObject> breakpoints = eventListenerBreakpoints();
     JSONObject::iterator it = breakpoints->find(fullEventName);
     if (it == breakpoints->end())
         return nullptr;
     bool match = false;
-    RefPtr<JSONObject> breakpointsByTarget = it->value->asObject();
+    RefPtr<JSONObject> breakpointsByTarget = JSONObject::cast(it->value);
     breakpointsByTarget->getBoolean(DOMDebuggerAgentState::eventTargetAny, &match);
     if (!match && targetName)
         breakpointsByTarget->getBoolean(targetName->lower(), &match);
     if (!match)
         return nullptr;
 
     RefPtr<JSONObject> eventData = JSONObject::create();
     eventData->setString("eventName", fullEventName);
     if (targetName)
         eventData->setString("targetName", *targetName);
@@ skipping 158 matching lines @@
         m_instrumentingAgents->setInspectorDOMDebuggerAgent(nullptr);
     }
 }
 
 void InspectorDOMDebuggerAgent::didCommitLoadForLocalFrame(LocalFrame*)
 {
     m_domBreakpoints.clear();
 }
 
 } // namespace blink