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

Source/core/inspector/InspectorHeapProfilerAgent.cpp

 /*
  * Copyright (C) 2013 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 134 matching lines @@
         ASSERT(size > 0);
         m_heapProfilerAgent->pushHeapStatsUpdate(chunk, size);
     }
 private:
     InspectorHeapProfilerAgent* m_heapProfilerAgent;
 };
 
 void InspectorHeapProfilerAgent::startTrackingHeapObjects(ErrorString*, const bool* trackAllocations)
 {
     m_state->setBoolean(HeapProfilerAgentState::heapObjectsTrackingEnabled, true);
-    bool allocationTrackingEnabled = trackAllocations && *trackAllocations;
+    bool allocationTrackingEnabled = asBool(trackAllocations);
     m_state->setBoolean(HeapProfilerAgentState::allocationTrackingEnabled, allocationTrackingEnabled);
     startTrackingHeapObjectsInternal(allocationTrackingEnabled);
 }
 
 void InspectorHeapProfilerAgent::requestHeapStatsUpdate()
 {
     if (!m_frontend)
         return;
     HeapStatsStream stream(this);
     SnapshotObjectId lastSeenObjectId = ScriptProfiler::requestHeapStatsUpdate(&stream);
@@ skipping 78 matching lines @@
                 m_frontend->flush();
             }
         }
         virtual bool isCanceled() OVERRIDE { return false; }
     private:
         InspectorFrontend::HeapProfiler* m_frontend;
         int m_totalWork;
     };
 
     String title = "Snapshot " + String::number(m_nextUserInitiatedHeapSnapshotNumber++);
-    HeapSnapshotProgress progress(reportProgress && *reportProgress ? m_frontend : 0);
+    HeapSnapshotProgress progress(asBool(reportProgress) ? m_frontend : 0);
     RefPtr<ScriptHeapSnapshot> snapshot = ScriptProfiler::takeHeapSnapshot(title, &progress);
     if (!snapshot) {
         *errorString = "Failed to take heap snapshot";
         return;
     }
 
     class OutputStream : public ScriptHeapSnapshot::OutputStream {
     public:
         explicit OutputStream(InspectorFrontend::HeapProfiler* frontend)
             : m_frontend(frontend) { }
@@ skipping 55 matching lines @@
 
 void InspectorHeapProfilerAgent::trace(Visitor* visitor)
 {
     visitor->trace(m_injectedScriptManager);
     visitor->trace(m_heapStatsUpdateTask);
     InspectorBaseAgent::trace(visitor);
 }
 
 } // namespace blink