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

media/filters/vpx_video_decoder.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.
 
 #include "media/filters/vpx_video_decoder.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 324 matching lines @@
 
   vpx_codec_ = InitializeVpxContext(vpx_codec_, config);
   if (!vpx_codec_)
     return false;
 
   // We use our own buffers for VP9 so that there is no need to copy data after
   // decoding.
   if (config.codec() == kCodecVP9) {
     memory_pool_ = new MemoryPool();
     base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
-        memory_pool_.get(), task_runner_);
+        memory_pool_.get(), "VpxVideoDecoder", task_runner_);
     if (vpx_codec_set_frame_buffer_functions(vpx_codec_,
                                              &MemoryPool::GetVP9FrameBuffer,
                                              &MemoryPool::ReleaseVP9FrameBuffer,
                                              memory_pool_.get())) {
       LOG(ERROR) << "Failed to configure external buffers.";
       return false;
     }
   }
 
   if (config.format() == PIXEL_FORMAT_YV12A) {
@@ skipping 256 matching lines @@
         vpx_image->stride[VPX_PLANE_Y], vpx_image->d_h, video_frame->get());
     return;
   }
   CopyAPlane(vpx_image_alpha->planes[VPX_PLANE_Y],
              vpx_image_alpha->stride[VPX_PLANE_Y],
              vpx_image_alpha->d_h,
              video_frame->get());
 }
 
 }  // namespace media