Remove raw DictionaryValue::Set in //chrome

chrome/test/chromedriver/chrome/web_view_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 "chrome/test/chromedriver/chrome/web_view_impl.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 538 matching lines @@
   int node_id;
   status = internal::GetNodeIdFromFunction(
       client_.get(), context_id, "function(element) { return element; }",
       args, &found_node, &node_id, w3c_compliant_);
   if (status.IsError())
     return status;
   if (!found_node)
     return Status(kUnknownError, "no node ID for file input");
   base::DictionaryValue params;
   params.SetInteger("nodeId", node_id);
-  params.Set("files", file_list.DeepCopy());
+  params.Set("files", base::MakeUnique<base::Value>(file_list));
   return client_->SendCommand("DOM.setFileInputFiles", params);
 }
 
 Status WebViewImpl::TakeHeapSnapshot(std::unique_ptr<base::Value>* snapshot) {
   return heap_snapshot_taker_->TakeSnapshot(snapshot);
 }
 
 Status WebViewImpl::InitProfileInternal() {
   base::DictionaryValue params;
 
@@ skipping 368 matching lines @@
 
   if (!cmd_result->GetInteger("nodeId", node_id))
     return Status(kUnknownError, "DOM.requestNode missing int 'nodeId'");
   *found_node = true;
   return Status(kOk);
 }
 
 
 
 }  // namespace internal