Make "three snapshot technique" work on heap snapshots loaded from files

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 26 matching lines @@
 #include "core/inspector/InspectorState.h"
 #include "core/platform/Timer.h"
 #include "wtf/CurrentTime.h"
 
 namespace WebCore {
 
 namespace HeapProfilerAgentState {
 static const char profileHeadersRequested[] = "profileHeadersRequested";
 }
 
-static const char* const userInitiatedProfileNameHeap = "org.webkit.profiles.user-initiated";
-
 class InspectorHeapProfilerAgent::HeapStatsUpdateTask {
 public:
     HeapStatsUpdateTask(InspectorHeapProfilerAgent*);
     void startTimer();
     void resetTimer() { m_timer.stop(); }
     void onTimer(Timer<HeapStatsUpdateTask>*);
 
 private:
     InspectorHeapProfilerAgent* m_heapProfilerAgent;
     Timer<HeapStatsUpdateTask> m_timer;
@@ skipping 197 matching lines @@
             if (m_frontend)
                 m_frontend->reportHeapSnapshotProgress(workDone, m_totalWork);
         }
         void Done() { }
         bool isCanceled() { return false; }
     private:
         InspectorFrontend::HeapProfiler* m_frontend;
         int m_totalWork;
     };
 
-    String title = String(userInitiatedProfileNameHeap) + "." + String::number(m_nextUserInitiatedHeapSnapshotNumber);
-    ++m_nextUserInitiatedHeapSnapshotNumber;
-
+    String title = "Snapshot " + String::number(m_nextUserInitiatedHeapSnapshotNumber++);
     HeapSnapshotProgress progress(reportProgress && *reportProgress ? m_frontend : 0);
     RefPtr<ScriptHeapSnapshot> snapshot = ScriptProfiler::takeHeapSnapshot(title, &progress);
     if (snapshot) {
         m_snapshots.add(snapshot->uid(), snapshot);
         if (m_frontend)
             m_frontend->addProfileHeader(createSnapshotHeader(*snapshot));
     }
 }
 
 void InspectorHeapProfilerAgent::getObjectByHeapObjectId(ErrorString* error, const String& heapSnapshotObjectId, const String* objectGroup, RefPtr<TypeBuilder::Runtime::RemoteObject>& result)
@@ skipping 30 matching lines @@
     if (value.hasNoValue() || value.isUndefined()) {
         *errorString = "Object with given id not found";
         return;
     }
     unsigned id = ScriptProfiler::getHeapObjectId(value);
     *heapSnapshotObjectId = String::number(id);
 }
 
 } // namespace WebCore