Eliminate the need for code delete events in CPU profiler.

test/cctest/test-cpu-profiler.cc

 // Copyright 2010 the V8 project authors. All rights reserved.
 //
 // Tests of profiles generator and utilities.
 
 #include "v8.h"
 #include "cpu-profiler-inl.h"
 #include "cctest.h"
 #include "../include/v8-profiler.h"
 
 using i::CodeEntry;
@@ skipping 89 matching lines @@
                             "bbb",
                             ToAddress(0x1200),
                             0x80);
   processor.CodeCreateEvent(i::Logger::STUB_TAG, 5, ToAddress(0x1300), 0x10);
   processor.CodeCreateEvent(i::Logger::BUILTIN_TAG,
                             "ddd",
                             ToAddress(0x1400),
                             0x80);
   processor.CodeMoveEvent(ToAddress(0x1400), ToAddress(0x1500));
   processor.CodeCreateEvent(i::Logger::STUB_TAG, 3, ToAddress(0x1600), 0x10);
-  processor.CodeDeleteEvent(ToAddress(0x1600));
+  processor.CodeCreateEvent(i::Logger::STUB_TAG, 4, ToAddress(0x1605), 0x10);
   // Enqueue a tick event to enable code events processing.
   EnqueueTickSampleEvent(&processor, ToAddress(0x1000));
 
   processor.Stop();
   processor.Join();
 
   // Check the state of profile generator.
   CodeEntry* entry1 = generator.code_map()->FindEntry(ToAddress(0x1000));
   CHECK_NE(NULL, entry1);
   CHECK_EQ(aaa_str, entry1->name());
@@ skipping 269 matching lines @@
   CHECK_EQ(NULL, v8::CpuProfiler::FindProfile(uid2));
   CHECK_EQ(p3, v8::CpuProfiler::FindProfile(uid3));
   const_cast<v8::CpuProfile*>(p2)->Delete();
   CHECK_EQ(1, v8::CpuProfiler::GetProfilesCount());
   CHECK_EQ(NULL, v8::CpuProfiler::FindProfile(uid2));
   CHECK_EQ(p3, v8::CpuProfiler::FindProfile(uid3));
   const_cast<v8::CpuProfile*>(p3)->Delete();
   CHECK_EQ(0, CpuProfiler::GetProfilesCount());
   CHECK_EQ(NULL, v8::CpuProfiler::FindProfile(uid3));
 }