Add ownership edges between HostSharedBitmap and shared memory

base/trace_event/process_memory_dump.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 "base/trace_event/process_memory_dump.h"
 
 #include <errno.h>
 
 #include <vector>
 
@@ skipping 324 matching lines @@
 void ProcessMemoryDump::AddOwnershipEdge(const MemoryAllocatorDumpGuid& source,
                                          const MemoryAllocatorDumpGuid& target,
                                          int importance) {
   allocator_dumps_edges_.push_back(
       {source, target, importance, kEdgeTypeOwnership});
 }
 
 void ProcessMemoryDump::AddOwnershipEdge(
     const MemoryAllocatorDumpGuid& source,
     const MemoryAllocatorDumpGuid& target) {
-  AddOwnershipEdge(source, target, 0 /* importance */);
+  AddOwnershipEdge(source, target, kDefaultImportance);
 }
 
 void ProcessMemoryDump::AddSuballocation(const MemoryAllocatorDumpGuid& source,
                                          const std::string& target_node_name) {
   // Do not create new dumps for suballocations in background mode.
   if (dump_args_.level_of_detail == MemoryDumpLevelOfDetail::BACKGROUND)
     return;
 
   std::string child_mad_name = target_node_name + "/__" + source.ToString();
   MemoryAllocatorDump* target_child_mad = CreateAllocatorDump(child_mad_name);
   AddOwnershipEdge(source, target_child_mad->guid());
 }
 
 MemoryAllocatorDump* ProcessMemoryDump::GetBlackHoleMad() {
   DCHECK(is_black_hole_non_fatal_for_testing_);
   if (!black_hole_mad_)
     black_hole_mad_.reset(new MemoryAllocatorDump("discarded", this));
   return black_hole_mad_.get();
 }
 
 }  // namespace trace_event
 }  // namespace base