fix gn bootstrap once again

BUG=None
TEST=./tools/gn/bootstrap/bootstrap.py
TBR=brettw@chromium.org

Review URL: https://codereview.chromium.org/1455743002

Cr-Original-Commit-Position: refs/heads/master@{#360131}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 5b67bfea1fea1bdcd3feb254d90c4147dee28f53
diff --git a/tools/gn/bootstrap/bootstrap.py b/tools/gn/bootstrap/bootstrap.py
index 6c2b3ca..6ca6802 100755
--- a/tools/gn/bootstrap/bootstrap.py
+++ b/tools/gn/bootstrap/bootstrap.py
@@ -245,12 +245,14 @@
       'base/time/time.cc',
       'base/timer/elapsed_timer.cc',
       'base/timer/timer.cc',
+      'base/trace_event/heap_profiler_allocation_context.cc',
+      'base/trace_event/heap_profiler_allocation_context_tracker.cc',
+      'base/trace_event/heap_profiler_stack_frame_deduplicator.cc',
       'base/trace_event/memory_allocator_dump.cc',
       'base/trace_event/memory_allocator_dump_guid.cc',
       '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_profiler_allocation_context.cc',
       'base/trace_event/process_memory_dump.cc',
       'base/trace_event/process_memory_maps.cc',
       'base/trace_event/process_memory_totals.cc',