Add instant trace methods

Bug: 207049735
Test: atest TraceDevTest
Change-Id: If2826a9bb1fb99d75ff3c9c03c16c2f5f1ec5d1b
diff --git a/libcutils/trace-host.cpp b/libcutils/trace-host.cpp
index 9781ad3..b01a0ec 100644
--- a/libcutils/trace-host.cpp
+++ b/libcutils/trace-host.cpp
@@ -28,6 +28,9 @@
 void atrace_end_body() { }
 void atrace_async_begin_body(const char* /*name*/, int32_t /*cookie*/) {}
 void atrace_async_end_body(const char* /*name*/, int32_t /*cookie*/) {}
+void atrace_instant_body(const char* /*name*/) {}
+void atrace_instant_for_track_body(const char* /*trackName*/,
+                                   const char* /*name*/) {}
 void atrace_int_body(const char* /*name*/, int32_t /*value*/) {}
 void atrace_int64_body(const char* /*name*/, int64_t /*value*/) {}
 void atrace_init() {}