Remove memory category from chrome://tracing

content/browser/browser_main_loop.cc

 // Copyright (c) 2012 The Chromium 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 "content/browser/browser_main_loop.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/feature_list.h"
 #include "base/location.h"
@@ skipping 681 matching lines @@
   }
 
   // Enable memory-infra dump providers.
   InitSkiaEventTracer();
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
       HostSharedBitmapManager::current(), "HostSharedBitmapManager", nullptr);
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
       skia::SkiaMemoryDumpProvider::GetInstance(), "Skia", nullptr);
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
       sql::SqlMemoryDumpProvider::GetInstance(), "Sql", nullptr);
-
-#if defined(TCMALLOC_TRACE_MEMORY_SUPPORTED)
-  trace_memory_controller_.reset(new base::trace_event::TraceMemoryController(
-      base::MessageLoop::current()->task_runner(),
-      ::HeapProfilerWithPseudoStackStart, ::HeapProfilerStop,
-      ::GetHeapProfile));
-#endif
 }
 
 int BrowserMainLoop::PreCreateThreads() {
   if (parts_) {
     TRACE_EVENT0("startup",
         "BrowserMainLoop::CreateThreads:PreCreateThreads");
     TRACK_SCOPED_REGION("Startup", "BrowserMainLoop::PreCreateThreads");
 
     result_code_ = parts_->PreCreateThreads();
   }
@@ skipping 281 matching lines @@
   if (parts_) {
     TRACE_EVENT0("shutdown",
                  "BrowserMainLoop::Subsystem:PostMainMessageLoopRun");
     parts_->PostMainMessageLoopRun();
   }
 
 #if defined(USE_AURA)
   aura::Env::DeleteInstance();
 #endif
 
-  trace_memory_controller_.reset();
   system_stats_monitor_.reset();
 
 #if !defined(OS_IOS)
   // Destroying the GpuProcessHostUIShims on the UI thread posts a task to
   // delete related objects on the GPU thread. This must be done before
   // stopping the GPU thread. The GPU thread will close IPC channels to renderer
   // processes so this has to happen before stopping the IO thread.
   {
     TRACE_EVENT0("shutdown", "BrowserMainLoop::Subsystem:GPUProcessHostShim");
     GpuProcessHostUIShim::DestroyAll();
@@ skipping 455 matching lines @@
   DCHECK(is_tracing_startup_for_duration_);
 
   is_tracing_startup_for_duration_ = false;
   TracingController::GetInstance()->StopTracing(
       TracingController::CreateFileSink(
           startup_trace_file_,
           base::Bind(OnStoppedStartupTracing, startup_trace_file_)));
 }
 
 }  // namespace content