Adds support for collecting statistics about code and its metadata.

src/log.cc

 // Copyright 2011 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/log.h"
 
 #include <cstdarg>
 #include <sstream>
 
 #include "src/bailout-reason.h"
@@ skipping 1540 matching lines @@
       tag = Logger::STUB_TAG;
       break;
     case AbstractCode::JS_TO_WASM_FUNCTION:
       description = "A JavaScript to Wasm adapter";
       tag = Logger::STUB_TAG;
       break;
     case AbstractCode::WASM_TO_JS_FUNCTION:
       description = "A Wasm to JavaScript adapter";
       tag = Logger::STUB_TAG;
       break;
+    case AbstractCode::NUMBER_OF_KINDS:
+      UNIMPLEMENTED();
   }
   PROFILE(isolate_, CodeCreateEvent(tag, code_object, description));
 }
 
 
 void Logger::LogCodeObjects() {
   Heap* heap = isolate_->heap();
   heap->CollectAllGarbage(Heap::kMakeHeapIterableMask,
                           "Logger::LogCodeObjects");
   HeapIterator iterator(heap);
@@ skipping 280 matching lines @@
     removeCodeEventListener(jit_logger_);
     delete jit_logger_;
     jit_logger_ = NULL;
   }
 
   return log_->Close();
 }
 
 }  // namespace internal
 }  // namespace v8