Remove more feature in product mode

runtime/vm/deopt_instructions.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/deopt_instructions.h"
 
 #include "vm/assembler.h"
 #include "vm/code_patcher.h"
 #include "vm/compiler.h"
 #include "vm/intermediate_language.h"
@@ skipping 120 matching lines @@
   }
   dest_frame_ = NULL;
 
   // Delete all deferred objects.
   for (intptr_t i = 0; i < deferred_objects_count_; i++) {
     delete deferred_objects_[i];
   }
   delete[] deferred_objects_;
   deferred_objects_ = NULL;
   deferred_objects_count_ = 0;
-  if (deopt_start_micros_ != 0) {
+  if (FLAG_support_timeline && (deopt_start_micros_ != 0)) {
     Isolate* isolate = Isolate::Current();
     TimelineStream* compiler_stream = isolate->GetCompilerStream();
     ASSERT(compiler_stream != NULL);
     if (compiler_stream->Enabled()) {
       const Code& code = Code::Handle(zone(), code_);
       const Function& function = Function::Handle(zone(), code.function());
       const char* function_name = function.QualifiedUserVisibleNameCString();
       const char* reason = DeoptReasonToCString(deopt_reason());
       int counter = function.deoptimization_counter();
       TimelineEvent* timeline_event = compiler_stream->StartEvent();
@@ skipping 1155 matching lines @@
                           Smi* offset,
                           TypedData* info,
                           Smi* reason) {
   intptr_t i = index * kEntrySize;
   *offset ^= table.At(i);
   *info ^= table.At(i + 1);
   *reason ^= table.At(i + 2);
 }
 
 }  // namespace dart