tracing: split trace event filter classes out of TraceLog

base/BUILD.gn

Index: base/BUILD.gn
diff --git a/base/BUILD.gn b/base/BUILD.gn
index 3d21aa4d350f80608c2feb07147b38de405386cb..dc7f6b54d241a67607f76471d900c1e9eba6f731 100644
--- a/base/BUILD.gn
+++ b/base/BUILD.gn
@@ -924,6 +924,8 @@ component("base") {
     "trace_event/category_registry.cc",
     "trace_event/category_registry.h",
     "trace_event/common/trace_event_common.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",
@@ -933,6 +935,8 @@ 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",
@@ -975,6 +979,8 @@ component("base") {
     "trace_event/trace_event_argument.h",
     "trace_event/trace_event_etw_export_win.cc",
     "trace_event/trace_event_etw_export_win.h",
+    "trace_event/trace_event_filter.cc",
+    "trace_event/trace_event_filter.h",
     "trace_event/trace_event_impl.cc",
     "trace_event/trace_event_impl.h",
     "trace_event/trace_event_memory_overhead.cc",
@@ -2023,6 +2029,7 @@ test("base_unittests") {
     "timer/timer_unittest.cc",
     "tools_sanity_unittest.cc",
     "trace_event/blame_context_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",
@@ -2036,6 +2043,8 @@ test("base_unittests") {
     "trace_event/trace_category_unittest.cc",
     "trace_event/trace_config_unittest.cc",
     "trace_event/trace_event_argument_unittest.cc",
+    "trace_event/trace_event_filter_test_utils.cc",
+    "trace_event/trace_event_filter_test_utils.h",
     "trace_event/trace_event_synthetic_delay_unittest.cc",
     "trace_event/trace_event_system_stats_monitor_unittest.cc",
     "trace_event/trace_event_unittest.cc",