[tracing] Add trace events filtering predicate for heap profiler

base/trace_event/heap_profiler_allocation_context_tracker_unittest.cc

Index: base/trace_event/heap_profiler_allocation_context_tracker_unittest.cc
diff --git a/base/trace_event/heap_profiler_allocation_context_tracker_unittest.cc b/base/trace_event/heap_profiler_allocation_context_tracker_unittest.cc
index 3064a6a711792e68c41976ce541c591dd586d588..f423a74a8e94848dd9e3676b5f8d94f6c58577b6 100644
--- a/base/trace_event/heap_profiler_allocation_context_tracker_unittest.cc
+++ b/base/trace_event/heap_profiler_allocation_context_tracker_unittest.cc
@@ -11,6 +11,7 @@
 #include "base/trace_event/heap_profiler.h"
 #include "base/trace_event/heap_profiler_allocation_context.h"
 #include "base/trace_event/heap_profiler_allocation_context_tracker.h"
+#include "base/trace_event/memory_dump_manager.h"
 #include "base/trace_event/trace_event.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -63,10 +64,12 @@ void AssertBacktraceContainsOnlyThreadName() {
 class AllocationContextTrackerTest : public testing::Test {
  public:
   void SetUp() override {
-    TraceConfig config("");
-    TraceLog::GetInstance()->SetEnabled(config, TraceLog::RECORDING_MODE);
     AllocationContextTracker::SetCaptureMode(
         AllocationContextTracker::CaptureMode::PSEUDO_STACK);
+    // Enabling memory-infra category sets default memory dump config which
+    // includes filters for capturing pseudo stack.
+    TraceConfig config(MemoryDumpManager::kTraceCategory, "");
+    TraceLog::GetInstance()->SetEnabled(config, TraceLog::RECORDING_MODE);
     AllocationContextTracker::SetCurrentThreadName(kThreadName);
   }
 
@@ -106,6 +109,12 @@ TEST_F(AllocationContextTrackerTest, PseudoStackScopedTrace) {
       AssertBacktraceEquals(frame_ce);
     }
 
+    {
+      TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("Testing"), kCupcake);
+      StackFrame frame_cc[] = {t, c, c};
+      AssertBacktraceEquals(frame_cc);
+    }
+
     AssertBacktraceEquals(frame_c);
   }