[Tracing] Remove AppendLongInteger in TracedValue.

src/tracing/traced-value.cc

 // Copyright 2016 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/tracing/traced-value.h"
 
 #include "src/base/platform/platform.h"
 
 namespace v8 {
 namespace tracing {
@@ skipping 103 matching lines @@
   data_ += '[';
   first_item_ = true;
 }
 
 void TracedValue::AppendInteger(int value) {
   DCHECK_CURRENT_CONTAINER_IS(kStackTypeArray);
   WriteComma();
   data_ += std::to_string(value);
 }
 
-void TracedValue::AppendLongInteger(int64_t value) {
-  DCHECK_CURRENT_CONTAINER_IS(kStackTypeArray);
-  WriteComma();
-  data_ += std::to_string(value);
-}
-
 void TracedValue::AppendDouble(double value) {
   DCHECK_CURRENT_CONTAINER_IS(kStackTypeArray);
   WriteComma();
   data_ += std::to_string(value);
 }
 
 void TracedValue::AppendBoolean(bool value) {
   DCHECK_CURRENT_CONTAINER_IS(kStackTypeArray);
   WriteComma();
   data_ += value ? "true" : "false";
@@ skipping 51 matching lines @@
 }
 
 void TracedValue::AppendAsTraceFormat(std::string* out) const {
   *out += '{';
   *out += data_;
   *out += '}';
 }
 
 }  // namespace tracing
 }  // namespace v8