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

base/trace_event/memory_dump_manager_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/trace_event/memory_dump_manager.h"
 
 #include "base/bind_helpers.h"
 #include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
@@ skipping 25 matching lines @@
 MATCHER(IsLightDump, "") {
   return arg.level_of_detail == MemoryDumpLevelOfDetail::LIGHT;
 }
 
 namespace {
 void RegisterDumpProvider(
     MemoryDumpProvider* mdp,
     const scoped_refptr<base::SingleThreadTaskRunner>& task_runner) {
   MemoryDumpManager* mdm = MemoryDumpManager::GetInstance();
   mdm->set_dumper_registrations_ignored_for_testing(false);
-  mdm->RegisterDumpProvider(mdp, task_runner);
+  mdm->RegisterDumpProvider(mdp, "TestDumpProvider", task_runner);
   mdm->set_dumper_registrations_ignored_for_testing(true);
 }
 
 void RegisterDumpProvider(MemoryDumpProvider* mdp) {
   RegisterDumpProvider(mdp, nullptr);
 }
 }  // namespace
 
 // Testing MemoryDumpManagerDelegate which, by default, short-circuits dump
 // requests locally to the MemoryDumpManager instead of performing IPC dances.
@@ skipping 656 matching lines @@
 
   EnableTracingWithTraceConfig(
       TraceConfigMemoryTestUtil::GetTraceConfig_PeriodicTriggers(
           kLightDumpPeriodMs, kHeavyDumpPeriodMs));
   run_loop.Run();
   DisableTracing();
 }
 
 }  // namespace trace_event
 }  // namespace base