[tracing] Add SkResourceCache as suballocation to avoid double counting.

content/common/discardable_shared_memory_heap.cc

 // Copyright 2014 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 "content/common/discardable_shared_memory_heap.h"
 
 #include <algorithm>
 
 #include "base/format_macros.h"
 #include "base/memory/discardable_shared_memory.h"
@@ skipping 339 matching lines @@
   while (offset < end) {
     Span* span = spans_[offset];
     if (!IsInFreeList(span)) {
       allocated_objects_count++;
       allocated_objects_size_in_bytes += span->length_ * block_size_;
     }
     offset += span->length_;
   }
 
   std::string segment_dump_name =
-      base::StringPrintf("discardable/segment_%d", segment_id);
+      base::StringPrintf("discardable/segments/segment_%d", segment_id);
   base::trace_event::MemoryAllocatorDump* segment_dump =
       pmd->CreateAllocatorDump(segment_dump_name);
   segment_dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
                           base::trace_event::MemoryAllocatorDump::kUnitsBytes,
                           static_cast<uint64_t>(size));
 
   base::trace_event::MemoryAllocatorDump* obj_dump =
       pmd->CreateAllocatorDump(segment_dump_name + "/allocated_objects");
   obj_dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameObjectsCount,
                       base::trace_event::MemoryAllocatorDump::kUnitsObjects,
@@ skipping 21 matching lines @@
 
 // static
 base::trace_event::MemoryAllocatorDumpGuid
 DiscardableSharedMemoryHeap::GetSegmentGUIDForTracing(uint64 tracing_process_id,
                                                       int32 segment_id) {
   return base::trace_event::MemoryAllocatorDumpGuid(base::StringPrintf(
       "discardable-x-process/%" PRIx64 "/%d", tracing_process_id, segment_id));
 }
 
 }  // namespace content