Convert Pass()→std::move() in //content/browser

content/browser/tracing/background_tracing_manager_impl.cc

Index: content/browser/tracing/background_tracing_manager_impl.cc
diff --git a/content/browser/tracing/background_tracing_manager_impl.cc b/content/browser/tracing/background_tracing_manager_impl.cc
index 3a80992acf1ee20971f8fa53810ae48198e84cdc..250d0fa4c13391edfeec5a37aa9c60fcda5bdcea 100644
--- a/content/browser/tracing/background_tracing_manager_impl.cc
+++ b/content/browser/tracing/background_tracing_manager_impl.cc
@@ -4,6 +4,8 @@
 
 #include "content/browser/tracing/background_tracing_manager_impl.h"
 
+#include <utility>
+
 #include "base/command_line.h"
 #include "base/json/json_writer.h"
 #include "base/macros.h"
@@ -159,7 +161,7 @@ bool BackgroundTracingManagerImpl::SetActiveScenario(
     }
   }
 
-  config_ = config_impl.Pass();
+  config_ = std::move(config_impl);
   receive_callback_ = receive_callback;
   requires_anonymized_data_ = requires_anonymized_data;
 
@@ -408,7 +410,7 @@ void BackgroundTracingManagerImpl::OnFinalizeStarted(
 
   if (!receive_callback_.is_null()) {
     receive_callback_.Run(
-        file_contents, metadata.Pass(),
+        file_contents, std::move(metadata),
         base::Bind(&BackgroundTracingManagerImpl::OnFinalizeComplete,
                    base::Unretained(this)));
   }
@@ -452,7 +454,7 @@ void BackgroundTracingManagerImpl::AddCustomMetadata(
 
   scoped_ptr<base::DictionaryValue> config_dict(new base::DictionaryValue());
   config_->IntoDict(config_dict.get());
-  metadata_dict.Set("config", config_dict.Pass());
+  metadata_dict.Set("config", std::move(config_dict));
 
   trace_data_sink->AddMetadata(metadata_dict);
 }