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

gpu/command_buffer/client/cmd_buffer_helper.cc

 // Copyright (c) 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.
 
 // This file contains the implementation of the command buffer helper class.
 
 #include "gpu/command_buffer/client/cmd_buffer_helper.h"
 
 #include <algorithm>
 #include "base/logging.h"
@@ skipping 25 matching lines @@
 #endif
       usable_(true),
       context_lost_(false),
       flush_automatically_(true),
       flush_generation_(0) {
   // In certain cases, ThreadTaskRunnerHandle isn't set (Android Webview).
   // Don't register a dump provider in these cases.
   // TODO(ericrk): Get this working in Android Webview. crbug.com/517156
   if (base::ThreadTaskRunnerHandle::IsSet()) {
     base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
-        this, base::ThreadTaskRunnerHandle::Get());
+        this, "gpu::CommandBufferHelper", base::ThreadTaskRunnerHandle::Get());
   }
 }
 
 void CommandBufferHelper::SetAutomaticFlushes(bool enabled) {
   flush_automatically_ = enabled;
   CalcImmediateEntries(0);
 }
 
 bool CommandBufferHelper::IsContextLost() {
   if (!context_lost_) {
@@ skipping 296 matching lines @@
                   GetTotalFreeEntriesNoWaiting() * sizeof(CommandBufferEntry));
   auto guid = GetBufferGUIDForTracing(tracing_process_id, ring_buffer_id_);
   const int kImportance = 2;
   pmd->CreateSharedGlobalAllocatorDump(guid);
   pmd->AddOwnershipEdge(dump->guid(), guid, kImportance);
 
   return true;
 }
 
 }  // namespace gpu