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

content/browser/devtools/protocol/tracing_handler.cc

Index: content/browser/devtools/protocol/tracing_handler.cc
diff --git a/content/browser/devtools/protocol/tracing_handler.cc b/content/browser/devtools/protocol/tracing_handler.cc
index ea5c2d44be4ed9bdd4684102a3afc8487b7437c7..eb6f29cacbe8aaa93e24fc0854981db228200daf 100644
--- a/content/browser/devtools/protocol/tracing_handler.cc
+++ b/content/browser/devtools/protocol/tracing_handler.cc
@@ -194,7 +194,7 @@ void TracingHandler::Start(Maybe<std::string> categories,
   if (config.isJust()) {
     std::unique_ptr<base::Value> value =
         protocol::toBaseValue(config.fromJust()->toValue().get(), 1000);
-    if (value && value->IsType(base::Value::TYPE_DICTIONARY)) {
+    if (value && value->IsType(base::Value::Type::DICTIONARY)) {
       trace_config = GetTraceConfigFromDevToolsConfig(
           *static_cast<base::DictionaryValue*>(value.get()));
     }
@@ -345,7 +345,7 @@ bool TracingHandler::IsStartupTracingActive() {
 base::trace_event::TraceConfig TracingHandler::GetTraceConfigFromDevToolsConfig(
     const base::DictionaryValue& devtools_config) {
   std::unique_ptr<base::Value> value = ConvertDictKeyStyle(devtools_config);
-  DCHECK(value && value->IsType(base::Value::TYPE_DICTIONARY));
+  DCHECK(value && value->IsType(base::Value::Type::DICTIONARY));
   std::unique_ptr<base::DictionaryValue> tracing_dict(
       static_cast<base::DictionaryValue*>(value.release()));