[OBSOLETE] tracing: split trace event filter logic out of TraceLog

base/BUILD.gn

Index: base/BUILD.gn
diff --git a/base/BUILD.gn b/base/BUILD.gn
index f3886c48f03c62133162a4ca0678be3149bb6f14..e7b5b84b5546a081655a973a15b318a21ae2588a 100644
--- a/base/BUILD.gn
+++ b/base/BUILD.gn
@@ -904,6 +904,10 @@ component("base") {
     "trace_event/category_registry.cc",
     "trace_event/category_registry.h",
     "trace_event/common/trace_event_common.h",
+    "trace_event/event_filter_registry.cc",
+    "trace_event/event_filter_registry.h",
+    "trace_event/event_name_filter.cc",
+    "trace_event/event_name_filter.h",
     "trace_event/heap_profiler.h",
     "trace_event/heap_profiler_allocation_context.cc",
     "trace_event/heap_profiler_allocation_context.h",
@@ -913,6 +917,8 @@ component("base") {
     "trace_event/heap_profiler_allocation_register.h",
     "trace_event/heap_profiler_allocation_register_posix.cc",
     "trace_event/heap_profiler_allocation_register_win.cc",
+    "trace_event/heap_profiler_event_filter.cc",
+    "trace_event/heap_profiler_event_filter.h",
     "trace_event/heap_profiler_heap_dump_writer.cc",
     "trace_event/heap_profiler_heap_dump_writer.h",
     "trace_event/heap_profiler_stack_frame_deduplicator.cc",
@@ -1981,6 +1987,8 @@ test("base_unittests") {
     "timer/timer_unittest.cc",
     "tools_sanity_unittest.cc",
     "trace_event/blame_context_unittest.cc",
+    "trace_event/event_filter_registry_unittest.cc",
+    "trace_event/event_name_filter_unittest.cc",
     "trace_event/heap_profiler_allocation_context_tracker_unittest.cc",
     "trace_event/heap_profiler_allocation_register_unittest.cc",
     "trace_event/heap_profiler_heap_dump_writer_unittest.cc",