Convert //content from scoped_ptr to std::unique_ptr

content/shell/browser/shell_net_log.h

Index: content/shell/browser/shell_net_log.h
diff --git a/content/shell/browser/shell_net_log.h b/content/shell/browser/shell_net_log.h
index b61edf258c0009a79236c76c98fb2c48c9525e80..3f4cf87734527484c2321494ad6f867dbea4cd6f 100644
--- a/content/shell/browser/shell_net_log.h
+++ b/content/shell/browser/shell_net_log.h
@@ -5,10 +5,10 @@
 #ifndef CONTENT_SHELL_BROWSER_SHELL_NET_LOG_H_
 #define CONTENT_SHELL_BROWSER_SHELL_NET_LOG_H_
 
+#include <memory>
 #include <string>
 
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "net/log/write_to_file_net_log_observer.h"
 
 namespace content {
@@ -19,7 +19,7 @@ class ShellNetLog : public net::NetLog {
   ~ShellNetLog() override;
 
  private:
-  scoped_ptr<net::WriteToFileNetLogObserver> write_to_file_observer_;
+  std::unique_ptr<net::WriteToFileNetLogObserver> write_to_file_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellNetLog);
 };