[WIP] Add SharedMemoryTracker to dump base::SharedMemory usage

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 <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
 #include <list>
 #include <memory>
 #include <utility>
 
 #include "base/barrier_closure.h"
 #include "base/bind.h"
 #include "base/containers/stack_container.h"
 #include "base/location.h"
 #include "base/macros.h"
+#include "base/memory/shared_memory.h"
+#include "base/memory/shared_memory_tracker.h"
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/memory_dump_manager.h"
 #include "base/trace_event/memory_dump_provider.h"
 #include "base/trace_event/trace_event.h"
 #include "gpu/GLES2/gl2extchromium.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "media/base/bind_to_current_loop.h"
 #include "media/renderers/gpu_video_accelerator_factories.h"
 #include "third_party/libyuv/include/libyuv.h"
 #include "ui/gfx/buffer_format_util.h"
-#include "ui/gfx/gpu_memory_buffer_tracing.h"
 #include "ui/gl/trace_util.h"
 
 namespace media {
 
 // Implementation of a pool of GpuMemoryBuffers used to back VideoFrames.
 class GpuMemoryBufferVideoFramePool::PoolImpl
     : public base::RefCountedThreadSafe<
           GpuMemoryBufferVideoFramePool::PoolImpl>,
       public base::trace_event::MemoryDumpProvider {
  public:
@@ skipping 422 matching lines @@
         base::trace_event::MemoryAllocatorDump* dump =
             pmd->CreateAllocatorDump(dump_name);
         size_t buffer_size_in_bytes = gfx::BufferSizeForBufferFormat(
             plane_resource.size, plane_resource.gpu_memory_buffer->GetFormat());
         dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
                         base::trace_event::MemoryAllocatorDump::kUnitsBytes,
                         buffer_size_in_bytes);
         dump->AddScalar("free_size",
                         base::trace_event::MemoryAllocatorDump::kUnitsBytes,
                         frame_resources->IsInUse() ? 0 : buffer_size_in_bytes);
-        auto shared_buffer_guid =
-            plane_resource.gpu_memory_buffer->GetGUIDForTracing(
-                tracing_process_id);
-        pmd->CreateSharedGlobalAllocatorDump(shared_buffer_guid);
-        pmd->AddOwnershipEdge(dump->guid(), shared_buffer_guid, kImportance);
+
+        base::SharedMemory* shared_memory =
+            plane_resource.gpu_memory_buffer->GetSharedMemory();
+        if (shared_memory) {
+          base::SharedMemoryTracker::AddOwnershipEdges(pmd, dump->guid(),
+                                                       *shared_memory);
+        } else {
+          auto shared_buffer_guid =
+              plane_resource.gpu_memory_buffer->GetGUIDForTracing(
+                  tracing_process_id);
+          pmd->CreateSharedGlobalAllocatorDump(shared_buffer_guid);
+          pmd->AddOwnershipEdge(dump->guid(), shared_buffer_guid, kImportance);
+        }
       }
     }
   }
   return true;
 }
 
 void GpuMemoryBufferVideoFramePool::PoolImpl::OnCopiesDone(
     const scoped_refptr<VideoFrame>& video_frame,
     FrameResources* frame_resources,
     const FrameReadyCB& frame_ready_cb) {
@@ skipping 341 matching lines @@
 }
 
 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