[Tracing] Re-add trace-events used by metrics accidentally removed.

src/parsing/parser.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/parsing/parser.h"
 
 #include <memory>
 
 #include "src/api.h"
 #include "src/ast/ast-expression-rewriter.h"
@@ skipping 573 matching lines @@
 FunctionLiteral* Parser::ParseProgram(Isolate* isolate, ParseInfo* info) {
   // TODO(bmeurer): We temporarily need to pass allow_nesting = true here,
   // see comment for HistogramTimerScope class.
 
   // It's OK to use the Isolate & counters here, since this function is only
   // called in the main thread.
   DCHECK(parsing_on_main_thread_);
 
   HistogramTimerScope timer_scope(isolate->counters()->parse(), true);
   RuntimeCallTimerScope runtime_timer(isolate, &RuntimeCallStats::Parse);
+  TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"), "V8.Parse");
   TRACE_EVENT_RUNTIME_CALL_STATS_TRACING_SCOPED(
       isolate, &tracing::TraceEventStatsTable::Parse);
   Handle<String> source(String::cast(info->script()->source()));
   isolate->counters()->total_parse_size()->Increment(source->length());
   base::ElapsedTimer timer;
   if (FLAG_trace_parse) {
     timer.Start();
   }
   fni_ = new (zone()) FuncNameInferrer(ast_value_factory(), zone());
 
@@ skipping 152 matching lines @@
   return result;
 }
 
 
 FunctionLiteral* Parser::ParseLazy(Isolate* isolate, ParseInfo* info) {
   // It's OK to use the Isolate & counters here, since this function is only
   // called in the main thread.
   DCHECK(parsing_on_main_thread_);
   RuntimeCallTimerScope runtime_timer(isolate, &RuntimeCallStats::ParseLazy);
   HistogramTimerScope timer_scope(isolate->counters()->parse_lazy());
+  TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"), "V8.ParseLazy");
   TRACE_EVENT_RUNTIME_CALL_STATS_TRACING_SCOPED(
       isolate, &tracing::TraceEventStatsTable::ParseLazy);
   Handle<String> source(String::cast(info->script()->source()));
   isolate->counters()->total_parse_size()->Increment(source->length());
   base::ElapsedTimer timer;
   if (FLAG_trace_parse) {
     timer.Start();
   }
   Handle<SharedFunctionInfo> shared_info = info->shared_info();
   DeserializeScopeChain(info, info->context(),
@@ skipping 5882 matching lines @@
   node->Print(Isolate::Current());
 }
 #endif  // DEBUG
 
 #undef CHECK_OK
 #undef CHECK_OK_VOID
 #undef CHECK_FAILED
 
 }  // namespace internal
 }  // namespace v8