Eliminate the need for code delete events in CPU profiler.

src/cpu-profiler.h

Index: src/cpu-profiler.h
diff --git a/src/cpu-profiler.h b/src/cpu-profiler.h
index 4175e8f6805fa2fd08d4382e8fc97940b435bb13..a71c0e0ab4e9e816b3c6abee99d05e7256c248aa 100644
--- a/src/cpu-profiler.h
+++ b/src/cpu-profiler.h
@@ -48,7 +48,6 @@ class TokenEnumerator;
 #define CODE_EVENTS_TYPE_LIST(V)                                   \
   V(CODE_CREATION,    CodeCreateEventRecord)                       \
   V(CODE_MOVE,        CodeMoveEventRecord)                         \
-  V(CODE_DELETE,      CodeDeleteEventRecord)                       \
   V(SHARED_FUNC_MOVE, SharedFunctionInfoMoveEventRecord)
 
 
@@ -87,14 +86,6 @@ class CodeMoveEventRecord : public CodeEventRecord {
 };
 
 
-class CodeDeleteEventRecord : public CodeEventRecord {
- public:
-  Address start;
-
-  INLINE(void UpdateCodeMap(CodeMap* code_map));
-};
-
-
 class SharedFunctionInfoMoveEventRecord : public CodeEventRecord {
  public:
   Address from;