[tracing] Add native allocation tracing mode.

base/trace_event/trace_log.cc

 // Copyright 2015 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 "base/trace_event/trace_log.h"
 
 #include <algorithm>
 #include <cmath>
 #include <memory>
 #include <utility>
@@ skipping 1298 matching lines @@
       event_callback(
           offset_event_timestamp,
           phase == TRACE_EVENT_PHASE_COMPLETE ? TRACE_EVENT_PHASE_BEGIN : phase,
           category_group_enabled, name, scope, id, num_args, arg_names,
           arg_types, arg_values, flags);
     }
   }
 
   // TODO(primiano): Add support for events with copied name crbug.com/581078
   if (!(flags & TRACE_EVENT_FLAG_COPY)) {
-    if (AllocationContextTracker::capture_enabled()) {
+    if (AllocationContextTracker::capture_mode() ==
+        AllocationContextTracker::CaptureMode::PSEUDO_STACK) {
       if (phase == TRACE_EVENT_PHASE_BEGIN ||
           phase == TRACE_EVENT_PHASE_COMPLETE) {
         AllocationContextTracker::GetInstanceForCurrentThread()
             ->PushPseudoStackFrame(name);
       } else if (phase == TRACE_EVENT_PHASE_END)
         // The pop for |TRACE_EVENT_PHASE_COMPLETE| events
         // is in |TraceLog::UpdateTraceEventDuration|.
         AllocationContextTracker::GetInstanceForCurrentThread()
             ->PopPseudoStackFrame(name);
     }
@@ skipping 110 matching lines @@
 #if defined(OS_ANDROID)
       trace_event->SendToATrace();
 #endif
     }
 
     if (trace_options() & kInternalEchoToConsole) {
       console_message =
           EventToConsoleMessage(TRACE_EVENT_PHASE_END, now, trace_event);
     }
 
-    if (base::trace_event::AllocationContextTracker::capture_enabled()) {
+    if (AllocationContextTracker::capture_mode() ==
+        AllocationContextTracker::CaptureMode::PSEUDO_STACK) {
       // The corresponding push is in |AddTraceEventWithThreadIdAndTimestamp|.
-      base::trace_event::AllocationContextTracker::GetInstanceForCurrentThread()
+      AllocationContextTracker::GetInstanceForCurrentThread()
           ->PopPseudoStackFrame(name);
     }
   }
 
   if (console_message.size())
     LOG(ERROR) << console_message;
 
   if (category_group_enabled_local & ENABLED_FOR_EVENT_CALLBACK) {
     EventCallback event_callback = reinterpret_cast<EventCallback>(
         subtle::NoBarrier_Load(&event_callback_));
@@ skipping 273 matching lines @@
 }
 
 ScopedTraceBinaryEfficient::~ScopedTraceBinaryEfficient() {
   if (*category_group_enabled_) {
     TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION(category_group_enabled_, name_,
                                                 event_handle_);
   }
 }
 
 }  // namespace trace_event_internal