Preload scan external css for @import

third_party/WebKit/Source/core/fetch/CSSStyleSheetResource.cpp

Index: third_party/WebKit/Source/core/fetch/CSSStyleSheetResource.cpp
diff --git a/third_party/WebKit/Source/core/fetch/CSSStyleSheetResource.cpp b/third_party/WebKit/Source/core/fetch/CSSStyleSheetResource.cpp
index 8aa33d13f76e3b233933654410925106089ba313..9b881f7b50ce5a5f7a436d6aedc81810554a6110 100644
--- a/third_party/WebKit/Source/core/fetch/CSSStyleSheetResource.cpp
+++ b/third_party/WebKit/Source/core/fetch/CSSStyleSheetResource.cpp
@@ -98,6 +98,14 @@ const String CSSStyleSheetResource::sheetText(MIMETypeCheck mimeTypeCheck) const
     return decodedText();
 }
 
+void CSSStyleSheetResource::appendData(const char* data, size_t length)
+{
+    Resource::appendData(data, length);
+    ResourceClientWalker<StyleSheetResourceClient> w(m_clients);
+    while (StyleSheetResourceClient* c = w.next())
+        c->didAppendData(this);

[kouhei (in TOK), 2016/04/21 06:35:03]

I'd prefer if the hook is only called on the first appendData. Something like
didFirstAppendData(this)?

[Charlie Harrison, 2016/04/25 15:14:34]

Done.

+}
+
 void CSSStyleSheetResource::checkNotify()
 {
     // Decode the data to find out the encoding and keep the sheet text around during checkNotify()