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

cc/resources/resource_pool.cc

 // Copyright 2012 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/resources/resource_pool.h"
 
 #include <algorithm>
 
 #include "base/format_macros.h"
 #include "base/strings/stringprintf.h"
@@ skipping 51 matching lines @@
       max_resource_count_(0),
       in_use_memory_usage_bytes_(0),
       total_memory_usage_bytes_(0),
       total_resource_count_(0),
       task_runner_(task_runner),
       evict_expired_resources_pending_(false),
       resource_expiration_delay_(
           base::TimeDelta::FromMilliseconds(kResourceExpirationDelayMs)),
       weak_ptr_factory_(this) {
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
-      this, task_runner_.get());
+      this, "cc::ResourcePool", task_runner_.get());
 }
 
 ResourcePool::~ResourcePool() {
   base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(
       this);
 
   DCHECK_EQ(0u, in_use_resources_.size());
 
   while (!busy_resources_.empty()) {
     DidFinishUsingResource(busy_resources_.take_front());
@@ skipping 213 matching lines @@
   for (const auto& resource : busy_resources_) {
     resource->OnMemoryDump(pmd, resource_provider_, false /* is_free */);
   }
   for (const auto& entry : in_use_resources_) {
     entry.second->OnMemoryDump(pmd, resource_provider_, false /* is_free */);
   }
   return true;
 }
 
 }  // namespace cc