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

chrome/browser/ui/webui/app_list/start_page_ui.cc

Index: chrome/browser/ui/webui/app_list/start_page_ui.cc
diff --git a/chrome/browser/ui/webui/app_list/start_page_ui.cc b/chrome/browser/ui/webui/app_list/start_page_ui.cc
index 2695981f97aede1026d50d99821cdbdd84a9d96f..01df2f9d2a6a8aa0b6a0f15700ad0d5c6ca3cb1e 100644
--- a/chrome/browser/ui/webui/app_list/start_page_ui.cc
+++ b/chrome/browser/ui/webui/app_list/start_page_ui.cc
@@ -4,10 +4,11 @@
 
 #include "chrome/browser/ui/webui/app_list/start_page_ui.h"
 
+#include <memory>
+
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/memory/ref_counted_memory.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/sys_info.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
@@ -32,7 +33,7 @@ StartPageUI::StartPageUI(content::WebUI* web_ui)
 StartPageUI::~StartPageUI() {}
 
 void StartPageUI::InitDataSource() {
-  scoped_ptr<content::WebUIDataSource> source(
+  std::unique_ptr<content::WebUIDataSource> source(
       content::WebUIDataSource::Create(chrome::kChromeUIAppListStartPageHost));
 
   source->SetJsonPath("strings.js");