Add charset to params of CSS resource loading for dev tools

third_party/WebKit/Source/core/inspector/InspectorResourceContentLoader.cpp

Index: third_party/WebKit/Source/core/inspector/InspectorResourceContentLoader.cpp
diff --git a/third_party/WebKit/Source/core/inspector/InspectorResourceContentLoader.cpp b/third_party/WebKit/Source/core/inspector/InspectorResourceContentLoader.cpp
index ba11004e17248da7a2263dad7d768800eeee548e..66a4c61db858ce9d4a0dfd103e4c57df07bf9eaf 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorResourceContentLoader.cpp
+++ b/third_party/WebKit/Source/core/inspector/InspectorResourceContentLoader.cpp
@@ -150,6 +150,7 @@ void InspectorResourceContentLoader::Start() {
           WebURLRequest::kRequestContextInternal);
       FetchParameters params(resource_request,
                              FetchInitiatorTypeNames::internal);
+      params.SetCharset(document->characterSet().GetString());
       Resource* resource =
           CSSStyleSheetResource::Fetch(params, document->Fetcher());
       if (!resource)