components: Change auto to not deduce raw pointers.

components/tracing/child/child_memory_dump_manager_delegate_impl.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 "components/tracing/child/child_memory_dump_manager_delegate_impl.h"
 
 #include "base/single_thread_task_runner.h"
 #include "build/build_config.h"
 #include "components/tracing/child/child_trace_message_filter.h"
 #include "components/tracing/common/process_metrics_memory_dump_provider.h"
@@ skipping 19 matching lines @@
 ChildMemoryDumpManagerDelegateImpl::ChildMemoryDumpManagerDelegateImpl()
     : ctmf_(nullptr),
       tracing_process_id_(
           base::trace_event::MemoryDumpManager::kInvalidTracingProcessId) {
 }
 
 ChildMemoryDumpManagerDelegateImpl::~ChildMemoryDumpManagerDelegateImpl() {}
 
 void ChildMemoryDumpManagerDelegateImpl::SetChildTraceMessageFilter(
     ChildTraceMessageFilter* ctmf) {
-  const auto& task_runner = ctmf ? (ctmf->ipc_task_runner()) : nullptr;
+  auto* task_runner = ctmf ? (ctmf->ipc_task_runner()) : nullptr;
   // Check that we are either registering the CTMF or tearing it down, but not
   // replacing a valid instance with another one (should never happen).
   DCHECK(!ctmf_ || (!ctmf && ctmf_task_runner_));
   ctmf_ = ctmf;
 
   {
     base::AutoLock lock(lock_);
     ctmf_task_runner_ = task_runner;
   }
 
@@ skipping 54 matching lines @@
 
   // Send the request up to the browser process' MessageDumpmanager.
   ctmf_->SendGlobalMemoryDumpRequest(args, callback);
 }
 
 uint64_t ChildMemoryDumpManagerDelegateImpl::GetTracingProcessId() const {
   return tracing_process_id_;
 }
 
 }  // namespace tracing