Patch by saiarcot895, https://codereview.chromium.org/2059803002

Index: tools/gn/bootstrap/bootstrap.py
diff --git a/tools/gn/bootstrap/bootstrap.py b/tools/gn/bootstrap/bootstrap.py
index 4648b540acbbba5666ea6a1c4b832e3706f7e642..72ffd6093d22dfa993f523ed425bcec8d3320b02 100755
--- a/tools/gn/bootstrap/bootstrap.py
+++ b/tools/gn/bootstrap/bootstrap.py
@@ -316,6 +316,7 @@ def write_ninja(path, root_gen_dir, options):
       'base/trace_event/memory_dump_manager.cc',
       'base/trace_event/memory_dump_request_args.cc',
       'base/trace_event/memory_dump_session_state.cc',
+      'base/trace_event/memory_infra_background_whitelist.cc',
       'base/trace_event/process_memory_dump.cc',
       'base/trace_event/process_memory_maps.cc',
       'base/trace_event/process_memory_totals.cc',
@@ -353,6 +354,7 @@ def write_ninja(path, root_gen_dir, options):
         'base/process/process_posix.cc',
         'base/synchronization/condition_variable_posix.cc',
         'base/synchronization/lock_impl_posix.cc',
+        'base/synchronization/read_write_lock_posix.cc',
         'base/synchronization/waitable_event_posix.cc',
         'base/sys_info_posix.cc',
         'base/threading/platform_thread_internal_posix.cc',