Make base::Value::TYPE a scoped enum.

ios/chrome/browser/find_in_page/js_findinpage_manager.mm

Index: ios/chrome/browser/find_in_page/js_findinpage_manager.mm
diff --git a/ios/chrome/browser/find_in_page/js_findinpage_manager.mm b/ios/chrome/browser/find_in_page/js_findinpage_manager.mm
index 856f153266f3dbd87a53865761f4c5182a673454..96d4b6045168fecb997e3aa89f3f9fdfa063cb82 100644
--- a/ios/chrome/browser/find_in_page/js_findinpage_manager.mm
+++ b/ios/chrome/browser/find_in_page/js_findinpage_manager.mm
@@ -177,7 +177,7 @@ const FindInPageEntry kFindInPageEntryZero = {{0.0, 0.0}, 0};
   std::unique_ptr<base::Value> root(base::JSONReader::Read(json, false));
   if (!root.get())
     return YES;
-  if (!root->IsType(base::Value::TYPE_LIST))
+  if (!root->IsType(base::Value::Type::LIST))
     return YES;
 
   base::ListValue* resultList = static_cast<base::ListValue*>(root.get());
@@ -226,7 +226,7 @@ const FindInPageEntry kFindInPageEntryZero = {{0.0, 0.0}, 0};
   if (!root.get())
     return kFindInPageEntryZero;
 
-  if (!root->IsType(base::Value::TYPE_LIST))
+  if (!root->IsType(base::Value::Type::LIST))
     return kFindInPageEntryZero;
 
   base::ListValue* position = static_cast<base::ListValue*>(root.get());