Convert //content from scoped_ptr to std::unique_ptr

content/public/browser/background_tracing_config.h

Index: content/public/browser/background_tracing_config.h
diff --git a/content/public/browser/background_tracing_config.h b/content/public/browser/background_tracing_config.h
index b7af5bbad79182c3e6b59119a7578617d3a25f08..6cd614587e874f2ee38039f695b910540c9e24fc 100644
--- a/content/public/browser/background_tracing_config.h
+++ b/content/public/browser/background_tracing_config.h
@@ -5,7 +5,8 @@
 #ifndef CONTENT_PUBLIC_BROWSER_BACKGROUND_TRACING_CONFIG_H_
 #define CONTENT_PUBLIC_BROWSER_BACKGROUND_TRACING_CONFIG_H_
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
+
 #include "base/trace_event/trace_event_impl.h"
 #include "content/common/content_export.h"
 
@@ -27,7 +28,7 @@ class CONTENT_EXPORT BackgroundTracingConfig {
   };
   TracingMode tracing_mode() const { return tracing_mode_; }
 
-  static scoped_ptr<BackgroundTracingConfig> FromDict(
+  static std::unique_ptr<BackgroundTracingConfig> FromDict(
       const base::DictionaryValue* dict);
 
   virtual void IntoDict(base::DictionaryValue* dict) const = 0;