Convert //chrome/browser/ui from scoped_ptr to std::unique_ptr

chrome/browser/ui/libgtk2ui/gtk2_util.cc

Index: chrome/browser/ui/libgtk2ui/gtk2_util.cc
diff --git a/chrome/browser/ui/libgtk2ui/gtk2_util.cc b/chrome/browser/ui/libgtk2ui/gtk2_util.cc
index cd72e9841b4c014cc45a1153eb6382e12d684163..6aceaf3e6180557664e93f63db715b2f34b6d1d2 100644
--- a/chrome/browser/ui/libgtk2ui/gtk2_util.cc
+++ b/chrome/browser/ui/libgtk2ui/gtk2_util.cc
@@ -9,10 +9,11 @@
 #include <gtk/gtk.h>
 #include <stddef.h>
 
+#include <memory>
+
 #include "base/command_line.h"
 #include "base/debug/leak_annotations.h"
 #include "base/environment.h"
-#include "base/memory/scoped_ptr.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/base/accelerators/accelerator.h"
@@ -28,7 +29,7 @@ void CommonInitFromCommandLine(const base::CommandLine& command_line,
                                void (*init_func)(gint*, gchar***)) {
   const std::vector<std::string>& args = command_line.argv();
   int argc = args.size();
-  scoped_ptr<char *[]> argv(new char *[argc + 1]);
+  std::unique_ptr<char* []> argv(new char*[argc + 1]);
   for (size_t i = 0; i < args.size(); ++i) {
     // TODO(piman@google.com): can gtk_init modify argv? Just being safe
     // here.