Revert of [Tracing] V8 Tracing Controller

src/d8.cc

Index: src/d8.cc
diff --git a/src/d8.cc b/src/d8.cc
index ec741b13f466bc22a07ff25c827f415df8dbbe94..611b3b570b1a4448cf5feae7dd13174e3934e289 100644
--- a/src/d8.cc
+++ b/src/d8.cc
@@ -35,7 +35,6 @@
 #include "src/ostreams.h"
 
 #include "include/libplatform/libplatform.h"
-#include "include/libplatform/v8-tracing.h"
 #ifndef V8_SHARED
 #include "src/api.h"
 #include "src/base/cpu.h"
@@ -1997,9 +1996,6 @@
         return false;
       }
       argv[i] = NULL;
-    } else if (strcmp(argv[i], "--enable-tracing") == 0) {
-      options.trace_enabled = true;
-      argv[i] = NULL;
     }
   }
 
@@ -2416,7 +2412,6 @@
 
 
 int Shell::Main(int argc, char* argv[]) {
-  std::ofstream trace_file;
 #if (defined(_WIN32) || defined(_WIN64))
   UINT new_flags =
       SEM_FAILCRITICALERRORS | SEM_NOGPFAULTERRORBOX | SEM_NOOPENFILEERRORBOX;
@@ -2483,29 +2478,6 @@
     Isolate::Scope scope(isolate);
     Initialize(isolate);
     PerIsolateData data(isolate);
-
-    if (options.trace_enabled) {
-      trace_file.open("v8_trace.json");
-      platform::tracing::TracingController* tracing_controller =
-          new platform::tracing::TracingController();
-      platform::tracing::TraceBuffer* trace_buffer =
-          platform::tracing::TraceBuffer::CreateTraceBufferRingBuffer(
-              platform::tracing::TraceBuffer::kRingBufferChunks,
-              platform::tracing::TraceWriter::CreateJSONTraceWriter(
-                  trace_file));
-      platform::tracing::TraceConfig* trace_config;
-      trace_config = new platform::tracing::TraceConfig();
-      trace_config->AddIncludedCategory("v8");
-      tracing_controller->Initialize(trace_buffer);
-      tracing_controller->StartTracing(trace_config);
-#ifndef V8_SHARED
-      if (!i::FLAG_verify_predictable) {
-        platform::SetTracingController(g_platform, tracing_controller);
-      }
-#else
-      platform::SetTracingController(g_platform, tracing_controller);
-#endif
-    }
 
 #ifndef V8_SHARED
     if (options.dump_heap_constants) {