tracing: remove sampling state profiler

base/trace_event/common/trace_event_common.h

Index: base/trace_event/common/trace_event_common.h
diff --git a/base/trace_event/common/trace_event_common.h b/base/trace_event/common/trace_event_common.h
index e506d652c675c488e2a9b5e4b9618dfc3bcb1a17..182ed5f7725e883f440985fdfec6d5c1cf1c7743 100644
--- a/base/trace_event/common/trace_event_common.h
+++ b/base/trace_event/common/trace_event_common.h
@@ -258,16 +258,6 @@
       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.