Update from https://crrev.com/329939

base/trace_event/memory_allocator_dump.cc

Index: base/trace_event/memory_allocator_dump.cc
diff --git a/base/trace_event/memory_allocator_dump.cc b/base/trace_event/memory_allocator_dump.cc
index 77c32ec3d8ad7ccdeabe6655c9ae0e85cbe1871b..edec31b1fdbae661bba823acddc09a7238e54b27 100644
--- a/base/trace_event/memory_allocator_dump.cc
+++ b/base/trace_event/memory_allocator_dump.cc
@@ -109,7 +109,7 @@ void MemoryAllocatorDump::AsValueInto(TracedValue* value) const {
   value->BeginDictionary("attrs");
 
   for (DictionaryValue::Iterator it(attributes_); !it.IsAtEnd(); it.Advance())
-    value->SetValue(it.key().c_str(), it.value().DeepCopy());
+    value->SetValue(it.key().c_str(), it.value().CreateDeepCopy());
 
   value->EndDictionary();  // "attrs": { ... }
   value->EndDictionary();  // "allocator_name/heap_subheap": { ... }