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

media/video/gpu_memory_buffer_video_frame_pool.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 "media/video/gpu_memory_buffer_video_frame_pool.h"
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 
 #include <algorithm>
@@ skipping 703 matching lines @@
 
 GpuMemoryBufferVideoFramePool::GpuMemoryBufferVideoFramePool() {}
 
 GpuMemoryBufferVideoFramePool::GpuMemoryBufferVideoFramePool(
     const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
     const scoped_refptr<base::TaskRunner>& worker_task_runner,
     GpuVideoAcceleratorFactories* gpu_factories)
     : pool_impl_(
           new PoolImpl(media_task_runner, worker_task_runner, gpu_factories)) {
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
-      pool_impl_.get(), media_task_runner);
+      pool_impl_.get(), "GpuMemoryBufferVideoFramePool", media_task_runner);
 }
 
 GpuMemoryBufferVideoFramePool::~GpuMemoryBufferVideoFramePool() {
   base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(
       pool_impl_.get());
 }
 
 void GpuMemoryBufferVideoFramePool::MaybeCreateHardwareFrame(
     const scoped_refptr<VideoFrame>& video_frame,
     const FrameReadyCB& frame_ready_cb) {
   DCHECK(video_frame);
   pool_impl_->CreateHardwareFrame(video_frame, frame_ready_cb);
 }
 
 }  // namespace media