Remove ScopedVector from ios/.

ios/chrome/browser/ui/webui/crashes_ui.cc

Index: ios/chrome/browser/ui/webui/crashes_ui.cc
diff --git a/ios/chrome/browser/ui/webui/crashes_ui.cc b/ios/chrome/browser/ui/webui/crashes_ui.cc
index 269baeabac6a1255980e982a5418cd43a3f6ba6e..9cf7168da1adfb6b7e4ebe4d242dabfb45718925 100644
--- a/ios/chrome/browser/ui/webui/crashes_ui.cc
+++ b/ios/chrome/browser/ui/webui/crashes_ui.cc
@@ -9,6 +9,7 @@
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/macros.h"
+#include "base/memory/ptr_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/sys_info.h"
 #include "base/values.h"
@@ -146,7 +147,7 @@ void CrashesDOMHandler::UpdateUI() {
 ///////////////////////////////////////////////////////////////////////////////
 
 CrashesUI::CrashesUI(web::WebUIIOS* web_ui) : web::WebUIIOSController(web_ui) {
-  web_ui->AddMessageHandler(new CrashesDOMHandler());
+  web_ui->AddMessageHandler(base::MakeUnique<CrashesDOMHandler>());
 
   // Set up the chrome://crashes/ source.
   web::WebUIIOSDataSource::Add(ios::ChromeBrowserState::FromWebUIIOS(web_ui),