[tracing] Add names to memory-infra dumpers for debugging

base/trace_event/trace_log.cc

Index: base/trace_event/trace_log.cc
diff --git a/base/trace_event/trace_log.cc b/base/trace_event/trace_log.cc
index d5a02dd8a010a7c147cd67420433d04ab5044c7a..70dec1d39fa522b70bd8b77864d570f55b83312d 100644
--- a/base/trace_event/trace_log.cc
+++ b/base/trace_event/trace_log.cc
@@ -261,7 +261,7 @@ TraceLog::ThreadLocalEventBuffer::ThreadLocalEventBuffer(TraceLog* trace_log)
 
   // This is to report the local memory usage when memory-infra is enabled.
   MemoryDumpManager::GetInstance()->RegisterDumpProvider(
-      this, ThreadTaskRunnerHandle::Get());
+      this, "ThreadLocalEventBuffer", ThreadTaskRunnerHandle::Get());
 
   AutoLock lock(trace_log->lock_);
   trace_log->thread_message_loops_.insert(message_loop);
@@ -396,7 +396,8 @@ TraceLog::TraceLog()
 
   logged_events_.reset(CreateTraceBuffer());
 
-  MemoryDumpManager::GetInstance()->RegisterDumpProvider(this);
+  MemoryDumpManager::GetInstance()->RegisterDumpProvider(this, "TraceLog",
+                                                         nullptr);
 }
 
 TraceLog::~TraceLog() {}