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

chrome/browser/ui/search/instant_controller.h

Index: chrome/browser/ui/search/instant_controller.h
diff --git a/chrome/browser/ui/search/instant_controller.h b/chrome/browser/ui/search/instant_controller.h
index eb04483563fb8c8b0ad73f128d2aa07e383fe7cd..1b474a8b3dd338c1bb1b070ee8081cd251047cd7 100644
--- a/chrome/browser/ui/search/instant_controller.h
+++ b/chrome/browser/ui/search/instant_controller.h
@@ -8,13 +8,13 @@
 #include <stdint.h>
 
 #include <list>
+#include <memory>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "chrome/browser/ui/search/instant_page.h"
 #include "chrome/common/search_types.h"
@@ -141,7 +141,7 @@ class InstantController : public InstantPage::Delegate {
   BrowserInstantController* const browser_;
 
   // The instance of InstantPage maintained by InstantController.
-  scoped_ptr<InstantTab> instant_tab_;
+  std::unique_ptr<InstantTab> instant_tab_;
 
   // The search model mode for the active tab.
   SearchMode search_mode_;