Fix buffer overflow in trace_event_android.cc

base/trace_event/BUILD.gn

 # 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.
 
 source_set("trace_event") {
   sources = [
     "common/trace_event_common.h",
     "heap_profiler_allocation_context.cc",
     "heap_profiler_allocation_context.h",
     "heap_profiler_allocation_context_tracker.cc",
@@ skipping 117 matching lines @@
     "trace_event_synthetic_delay_unittest.cc",
     "trace_event_system_stats_monitor_unittest.cc",
     "trace_event_unittest.cc",
     "winheap_dump_provider_win_unittest.cc",
   ]
 
   if (is_linux || is_android) {
     sources += [ "process_memory_maps_dump_provider_unittest.cc" ]
   }
 
+  if (is_android) {
+    sources += [ "trace_event_android_unittest.cc" ]
+  }
+
   deps = [
     "//base/test:test_support",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }