DevTools: nits: introduce a handy asBool(bool*) and use across agents.

Source/core/inspector/InspectorDOMAgent.cpp

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 1223 matching lines @@
     highlightConfig->border = parseConfigColor("borderColor", highlightInspectorObject);
     highlightConfig->margin = parseConfigColor("marginColor", highlightInspectorObject);
     highlightConfig->eventTarget = parseConfigColor("eventTargetColor", highlightInspectorObject);
     return highlightConfig.release();
 }
 
 void InspectorDOMAgent::setInspectModeEnabled(ErrorString* errorString, bool enabled, const bool* inspectUAShadowDOM, const RefPtr<JSONObject>* highlightConfig)
 {
     if (enabled && !pushDocumentUponHandlelessOperation(errorString))
         return;
-    SearchMode searchMode = enabled ? (inspectUAShadowDOM && *inspectUAShadowDOM ? SearchingForUAShadow : SearchingForNormal) : NotSearching;
+    SearchMode searchMode = enabled ? (asBool(inspectUAShadowDOM) ? SearchingForUAShadow : SearchingForNormal) : NotSearching;
     setSearchingForNode(errorString, searchMode, highlightConfig ? highlightConfig->get() : 0);
 }
 
 void InspectorDOMAgent::highlightRect(ErrorString*, int x, int y, int width, int height, const RefPtr<JSONObject>* color, const RefPtr<JSONObject>* outlineColor)
 {
     OwnPtr<FloatQuad> quad = adoptPtr(new FloatQuad(FloatRect(x, y, width, height)));
     innerHighlightQuad(quad.release(), color, outlineColor);
 }
 
 void InspectorDOMAgent::highlightQuad(ErrorString* errorString, const RefPtr<JSONArray>& quadArray, const RefPtr<JSONObject>* color, const RefPtr<JSONObject>* outlineColor)
@@ skipping 938 matching lines @@
     visitor->trace(m_searchResults);
 #endif
     visitor->trace(m_history);
     visitor->trace(m_domEditor);
     visitor->trace(m_listener);
     InspectorBaseAgent::trace(visitor);
 }
 
 } // namespace blink