Convert //content from scoped_ptr to std::unique_ptr

content/public/browser/tracing_delegate.h

Index: content/public/browser/tracing_delegate.h
diff --git a/content/public/browser/tracing_delegate.h b/content/public/browser/tracing_delegate.h
index 8b9a224ef7237b6ac5a6386b1dcd1aec1452041d..192329eb9ab348ead2728b8f601df468d3e717c6 100644
--- a/content/public/browser/tracing_delegate.h
+++ b/content/public/browser/tracing_delegate.h
@@ -5,10 +5,10 @@
 #ifndef CONTENT_PUBLIC_BROWSER_TRACING_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_TRACING_DELEGATE_H_
 
+#include <memory>
 #include <string>
 
 #include "base/callback.h"
-#include "base/memory/scoped_ptr.h"
 #include "content/common/content_export.h"
 
 namespace base {
@@ -34,7 +34,7 @@ class CONTENT_EXPORT TracingDelegate {
   virtual ~TracingDelegate() {}
 
   // Provide trace uploading functionality; see trace_uploader.h.
-  virtual scoped_ptr<TraceUploader> GetTraceUploader(
+  virtual std::unique_ptr<TraceUploader> GetTraceUploader(
       net::URLRequestContextGetter* request_context) = 0;
 
   // This can be used to veto a particular background tracing scenario.