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

cc/raster/one_copy_tile_task_worker_pool.cc

 // Copyright 2014 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 "cc/raster/one_copy_tile_task_worker_pool.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/strings/stringprintf.h"
@@ skipping 198 matching lines @@
       max_staging_buffer_usage_in_bytes_(max_staging_buffer_usage_in_bytes),
       use_rgba_4444_texture_format_(use_rgba_4444_texture_format),
       staging_buffer_usage_in_bytes_(0),
       free_staging_buffer_usage_in_bytes_(0),
       staging_buffer_expiration_delay_(
           base::TimeDelta::FromMilliseconds(kStagingBufferExpirationDelayMs)),
       reduce_memory_usage_pending_(false),
       weak_ptr_factory_(this),
       task_set_finished_weak_ptr_factory_(this) {
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
-      this, base::ThreadTaskRunnerHandle::Get());
+      this, "OneCopyTileTaskWorkerPool", base::ThreadTaskRunnerHandle::Get());
   reduce_memory_usage_callback_ =
       base::Bind(&OneCopyTileTaskWorkerPool::ReduceMemoryUsage,
                  weak_ptr_factory_.GetWeakPtr());
 }
 
 OneCopyTileTaskWorkerPool::~OneCopyTileTaskWorkerPool() {
   base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(
       this);
 }
 
@@ skipping 586 matching lines @@
 
   staging_state->SetInteger("staging_buffer_count",
                             static_cast<int>(buffers_.size()));
   staging_state->SetInteger("busy_count",
                             static_cast<int>(busy_buffers_.size()));
   staging_state->SetInteger("free_count",
                             static_cast<int>(free_buffers_.size()));
 }
 
 }  // namespace cc