tracing: remove sampling state profiler

base/trace_event/common/trace_event_common.h

 // 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.
 
 // 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 240 matching lines @@
   INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, category_group, name,    \
                            TRACE_EVENT_FLAG_COPY | scope, arg1_name, arg1_val, \
                            arg2_name, arg2_val)
 
 #define TRACE_EVENT_INSTANT_WITH_TIMESTAMP0(category_group, name, scope, \
                                             timestamp)                   \
   INTERNAL_TRACE_EVENT_ADD_WITH_TIMESTAMP(                               \
       TRACE_EVENT_PHASE_INSTANT, category_group, name, timestamp,        \
       TRACE_EVENT_FLAG_NONE | scope)
 
-// Syntactic sugars for the sampling tracing in the main thread.
-#define TRACE_EVENT_SCOPED_SAMPLING_STATE(category, name) \
-  TRACE_EVENT_SCOPED_SAMPLING_STATE_FOR_BUCKET(0, category, name)
-#define TRACE_EVENT_GET_SAMPLING_STATE() \
-  TRACE_EVENT_GET_SAMPLING_STATE_FOR_BUCKET(0)
-#define TRACE_EVENT_SET_SAMPLING_STATE(category, name) \
-  TRACE_EVENT_SET_SAMPLING_STATE_FOR_BUCKET(0, category, name)
-#define TRACE_EVENT_SET_NONCONST_SAMPLING_STATE(category_and_name) \
-  TRACE_EVENT_SET_NONCONST_SAMPLING_STATE_FOR_BUCKET(0, category_and_name)
-
 // Records a single BEGIN event called "name" immediately, with 0, 1 or 2
 // associated arguments. If the category is not enabled, then this
 // does nothing.
 // - category and name strings must have application lifetime (statics or
 //   literals). They may not include " chars.
 #define TRACE_EVENT_BEGIN0(category_group, name)                          \
   INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, category_group, name, \
                            TRACE_EVENT_FLAG_NONE)
 #define TRACE_EVENT_BEGIN1(category_group, name, arg1_name, arg1_val)     \
   INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, category_group, name, \
@@ skipping 793 matching lines @@
 
 // Enum reflecting the scope of an INSTANT event. Must fit within
 // TRACE_EVENT_FLAG_SCOPE_MASK.
 #define TRACE_EVENT_SCOPE_GLOBAL (static_cast<unsigned char>(0 << 3))
 #define TRACE_EVENT_SCOPE_PROCESS (static_cast<unsigned char>(1 << 3))
 #define TRACE_EVENT_SCOPE_THREAD (static_cast<unsigned char>(2 << 3))
 
 #define TRACE_EVENT_SCOPE_NAME_GLOBAL ('g')
 #define TRACE_EVENT_SCOPE_NAME_PROCESS ('p')
 #define TRACE_EVENT_SCOPE_NAME_THREAD ('t')