[WIP] WebFonts cache-aware timeout adaption

third_party/WebKit/Source/core/css/CSSFontFaceSrcValue.cpp

Index: third_party/WebKit/Source/core/css/CSSFontFaceSrcValue.cpp
diff --git a/third_party/WebKit/Source/core/css/CSSFontFaceSrcValue.cpp b/third_party/WebKit/Source/core/css/CSSFontFaceSrcValue.cpp
index 6a88cbe223d3a28d1510ec6cb5bf1bc2700cdbaf..e11181ddaa5beb95a703e9fa2a845d64728346b9 100644
--- a/third_party/WebKit/Source/core/css/CSSFontFaceSrcValue.cpp
+++ b/third_party/WebKit/Source/core/css/CSSFontFaceSrcValue.cpp
@@ -35,6 +35,7 @@
 #include "core/fetch/ResourceFetcher.h"
 #include "core/loader/MixedContentChecker.h"
 #include "platform/CrossOriginAttributeValue.h"
+#include "platform/RuntimeEnabledFeatures.h"
 #include "platform/fonts/FontCache.h"
 #include "platform/fonts/FontCustomPlatformData.h"
 #include "platform/weborigin/SecurityPolicy.h"
@@ -86,8 +87,10 @@ static void setCrossOriginAccessControl(FetchRequest& request,
 
 FontResource* CSSFontFaceSrcValue::fetch(Document* document) const {
   if (!m_fetched) {
-    FetchRequest request(ResourceRequest(m_absoluteResource),
-                         FetchInitiatorTypeNames::css);
+    ResourceRequest resourceRequest(m_absoluteResource);
+    resourceRequest.setIsCacheAwareLoadingEnabled(
+        RuntimeEnabledFeatures::webFontsCacheAwareTimeoutAdaptionEnabled());
+    FetchRequest request(resourceRequest, FetchInitiatorTypeNames::css);
     request.setContentSecurityCheck(m_shouldCheckContentSecurityPolicy);
     SecurityOrigin* securityOrigin = document->getSecurityOrigin();
     setCrossOriginAccessControl(request, securityOrigin);