Remove raw base::DictionaryValue::Set in //content

content/browser/tracing/tracing_controller_impl.cc

 // Copyright (c) 2013 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/browser/tracing/tracing_controller_impl.h"
 
 #include <algorithm>
 #include <memory>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/cpu.h"
 #include "base/files/file_util.h"
 #include "base/guid.h"
 #include "base/json/string_escape.h"
 #include "base/macros.h"
+#include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/sys_info.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "base/trace_event/trace_event.h"
+#include "base/values.h"
 #include "build/build_config.h"
 #include "components/tracing/common/process_metrics_memory_dump_provider.h"
 #include "content/browser/tracing/file_tracing_provider_impl.h"
 #include "content/browser/tracing/trace_message_filter.h"
 #include "content/browser/tracing/tracing_ui.h"
 #include "content/common/child_process_messages.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/gpu_data_manager.h"
 #include "content/public/browser/tracing_delegate.h"
@@ skipping 778 matching lines @@
     const MetadataFilterPredicate& filter) {
   if (filter.is_null()) {
     sink->AddMetadata(std::move(metadata));
     return;
   }
   std::unique_ptr<base::DictionaryValue> filtered_metadata(
       new base::DictionaryValue);
   for (base::DictionaryValue::Iterator it(*metadata); !it.IsAtEnd();
        it.Advance()) {
     if (filter.Run(it.key()))
-      filtered_metadata->Set(it.key(), it.value().DeepCopy());
+      filtered_metadata->Set(it.key(),
+                             base::MakeUnique<base::Value>(it.value()));
     else
       filtered_metadata->SetString(it.key(), "__stripped__");
   }
   sink->AddMetadata(std::move(filtered_metadata));
 }
 
 std::unique_ptr<base::DictionaryValue>
 TracingControllerImpl::GenerateTracingMetadataDict() const {
   // It's important that this function creates a new metadata dict and returns
   // it rather than directly populating the metadata_ member, as the data may
@@ skipping 100 matching lines @@
 void TracingControllerImpl::RemoveTraceMessageFilterObserver(
     TraceMessageFilterObserver* observer) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   trace_message_filter_observers_.RemoveObserver(observer);
 
   for (auto& filter : trace_message_filters_)
     observer->OnTraceMessageFilterRemoved(filter.get());
 }
 
 }  // namespace content