Update from https://crrev.com/328418

base/trace_event/trace_event.h

 // 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.
 
 // This header file defines the set of trace_event macros without specifying
 // how the events actually get collected and stored. If you need to expose trace
 // events to some other universe, you can copy-and-paste this file as well as
 // trace_event.h, modifying the macros contained there as necessary for the
 // target platform. The end result is that multiple libraries can funnel events
 // through to a shared trace event collector.
@@ skipping 691 matching lines @@
 // NESTABLE_ASYNC event of that id. Corresponding warning messages for
 // unmatched events will be shown in the analysis view.
 
 // Records a single NESTABLE_ASYNC_BEGIN event called "name" immediately, with 2
 // associated arguments. If the category is not enabled, then this does nothing.
 #define TRACE_EVENT_NESTABLE_ASYNC_BEGIN2(category_group, name, id, arg1_name, \
         arg1_val, arg2_name, arg2_val) \
     INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_NESTABLE_ASYNC_BEGIN, \
         category_group, name, id, TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val, \
         arg2_name, arg2_val)
+#define TRACE_EVENT_COPY_NESTABLE_ASYNC_BEGIN_WITH_TTS2(category_group, name, \
+        id, arg1_name, arg1_val, arg2_name, arg2_val) \
+    INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_NESTABLE_ASYNC_BEGIN, \
+        category_group, name, id, \
+        TRACE_EVENT_FLAG_ASYNC_TTS | TRACE_EVENT_FLAG_COPY, \
+        arg1_name, arg1_val, arg2_name, arg2_val)
+
 // Records a single NESTABLE_ASYNC_END event called "name" immediately, with 2
 // associated arguments. If the category is not enabled, then this does nothing.
 #define TRACE_EVENT_NESTABLE_ASYNC_END2(category_group, name, id, arg1_name, \
         arg1_val, arg2_name, arg2_val) \
     INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_NESTABLE_ASYNC_END, \
         category_group, name, id, TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val, \
         arg2_name, arg2_val)
+#define TRACE_EVENT_COPY_NESTABLE_ASYNC_END_WITH_TTS2(category_group, name, \
+        id, arg1_name, arg1_val, arg2_name, arg2_val) \
+    INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_NESTABLE_ASYNC_END, \
+        category_group, name, id, \
+        TRACE_EVENT_FLAG_ASYNC_TTS | TRACE_EVENT_FLAG_COPY, \
+        arg1_name, arg1_val, arg2_name, arg2_val)
+
 // Records a single NESTABLE_ASYNC_INSTANT event called "name" immediately,
 // with 2 associated arguments. If the category is not enabled, then this
 // does nothing.
 #define TRACE_EVENT_NESTABLE_ASYNC_INSTANT2(category_group, name, id, \
         arg1_name, arg1_val, arg2_name, arg2_val) \
     INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_NESTABLE_ASYNC_INSTANT, \
         category_group, name, id, TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val, \
         arg2_name, arg2_val)
 
 // Records a single FLOW_BEGIN event called "name" immediately, with 0, 1 or 2
@@ skipping 345 matching lines @@
 #define TRACE_EVENT_PHASE_MEMORY_DUMP ('v')
 
 // Flags for changing the behavior of TRACE_EVENT_API_ADD_TRACE_EVENT.
 #define TRACE_EVENT_FLAG_NONE         (static_cast<unsigned char>(0))
 #define TRACE_EVENT_FLAG_COPY         (static_cast<unsigned char>(1 << 0))
 #define TRACE_EVENT_FLAG_HAS_ID       (static_cast<unsigned char>(1 << 1))
 #define TRACE_EVENT_FLAG_MANGLE_ID    (static_cast<unsigned char>(1 << 2))
 #define TRACE_EVENT_FLAG_SCOPE_OFFSET (static_cast<unsigned char>(1 << 3))
 #define TRACE_EVENT_FLAG_SCOPE_EXTRA  (static_cast<unsigned char>(1 << 4))
 #define TRACE_EVENT_FLAG_EXPLICIT_TIMESTAMP (static_cast<unsigned char>(1 << 5))
+#define TRACE_EVENT_FLAG_ASYNC_TTS    (static_cast<unsigned char>(1 << 6))
 
 #define TRACE_EVENT_FLAG_SCOPE_MASK   (static_cast<unsigned char>( \
     TRACE_EVENT_FLAG_SCOPE_OFFSET | TRACE_EVENT_FLAG_SCOPE_EXTRA))
 
 // Type values for identifying types in the TraceValue union.
 #define TRACE_VALUE_TYPE_BOOL         (static_cast<unsigned char>(1))
 #define TRACE_VALUE_TYPE_UINT         (static_cast<unsigned char>(2))
 #define TRACE_VALUE_TYPE_INT          (static_cast<unsigned char>(3))
 #define TRACE_VALUE_TYPE_DOUBLE       (static_cast<unsigned char>(4))
 #define TRACE_VALUE_TYPE_POINTER      (static_cast<unsigned char>(5))
@@ skipping 539 matching lines @@
   const char* name_;
   IDType id_;
 
   DISALLOW_COPY_AND_ASSIGN(TraceScopedTrackableObject);
 };
 
 }  // namespace trace_event
 }  // namespace base
 
 #endif  // BASE_TRACE_EVENT_TRACE_EVENT_H_