[profiler] Fix a memory leak of CodeEvent objects

src/profiler/profile-generator.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/profiler/profile-generator.h"
 
 #include "src/base/adapters.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/global-handles.h"
@@ skipping 617 matching lines @@
   // As starting / stopping profiles is rare relatively to this
   // method, we don't bother minimizing the duration of lock holding,
   // e.g. copying contents of the list to a local vector.
   current_profiles_semaphore_.Wait();
   for (int i = 0; i < current_profiles_.length(); ++i) {
     current_profiles_[i]->AddPath(timestamp, path, src_line, update_stats);
   }
   current_profiles_semaphore_.Signal();
 }
 
-ProfileGenerator::ProfileGenerator(Isolate* isolate,
-                                   CpuProfilesCollection* profiles)
-    : isolate_(isolate), profiles_(profiles) {
-  RuntimeCallStats* rcs = isolate_->counters()->runtime_call_stats();
-  for (int i = 0; i < RuntimeCallStats::counters_count; ++i) {
-    RuntimeCallCounter* counter = &(rcs->*(RuntimeCallStats::counters[i]));
-    DCHECK(counter->name());
-    auto entry = new CodeEntry(CodeEventListener::FUNCTION_TAG, counter->name(),
-                               CodeEntry::kEmptyNamePrefix, "native V8Runtime");
-    code_map_.AddCode(reinterpret_cast<Address>(counter), entry, 1);
-  }
-}
+ProfileGenerator::ProfileGenerator(CpuProfilesCollection* profiles)
+    : profiles_(profiles) {}
 
 void ProfileGenerator::RecordTickSample(const TickSample& sample) {
   std::vector<CodeEntry*> entries;
   // Conservatively reserve space for stack frames + pc + function + vm-state.
   // There could in fact be more of them because of inlined entries.
   entries.reserve(sample.frames_count + 3);
 
   // The ProfileNode knows nothing about all versions of generated code for
   // the same JS function. The line number information associated with
   // the latest version of generated code is used to find a source line number
@@ skipping 107 matching lines @@
     case EXTERNAL:
       return CodeEntry::program_entry();
     case IDLE:
       return CodeEntry::idle_entry();
     default: return NULL;
   }
 }
 
 }  // namespace internal
 }  // namespace v8