Trace FrameLoader object snapshots

third_party/WebKit/Source/core/loader/FrameLoaderStateMachine.h

 /*
  * Copyright (C) 2010 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 14 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef FrameLoaderStateMachine_h
 #define FrameLoaderStateMachine_h
 
 #include "core/CoreExport.h"
 #include "wtf/Allocator.h"
 #include "wtf/Noncopyable.h"
+#include "wtf/text/WTFString.h"
 
 namespace blink {
 
 // Encapsulates a state machine for FrameLoader. Note that this is different from FrameState,
 // which stores the state of the current load that FrameLoader is executing.
 class CORE_EXPORT FrameLoaderStateMachine {
     DISALLOW_NEW();
     WTF_MAKE_NONCOPYABLE(FrameLoaderStateMachine);
 public:
     FrameLoaderStateMachine();
 
     // Once a load has been committed, the state may
     // alternate between CommittedFirstRealLoad and FirstLayoutDone.
     // Otherwise, the states only go down the list.
     enum State {
         CreatingInitialEmptyDocument,
         DisplayingInitialEmptyDocument,
         CommittedFirstRealLoad,
         CommittedMultipleRealLoads
     };
 
     bool committedFirstRealDocumentLoad() const;
     bool creatingInitialEmptyDocument() const;
     bool isDisplayingInitialEmptyDocument() const;
     bool committedMultipleRealLoads() const;
     void advanceTo(State);
 
+    String toString() const;
+
 private:
     State m_state;
 };
 
 } // namespace blink
 
 #endif // FrameLoaderStateMachine_h