Reland: WebFonts cache-aware timeout adaptation

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 d098c355c285681c5330161c337e727700fe94d0..67731ba5ead0425875df26a26a5e631f7ea10578 100644
--- a/third_party/WebKit/Source/core/css/CSSFontFaceSrcValue.cpp
+++ b/third_party/WebKit/Source/core/css/CSSFontFaceSrcValue.cpp
@@ -34,6 +34,7 @@
 #include "core/fetch/ResourceFetcher.h"
 #include "core/loader/resource/FontResource.h"
 #include "platform/CrossOriginAttributeValue.h"
+#include "platform/RuntimeEnabledFeatures.h"
 #include "platform/fonts/FontCache.h"
 #include "platform/fonts/FontCustomPlatformData.h"
 #include "platform/weborigin/SecurityPolicy.h"
@@ -90,6 +91,8 @@ FontResource* CSSFontFaceSrcValue::fetch(Document* document) const {
   if (!m_fetched) {
     FetchRequest request(ResourceRequest(m_absoluteResource),
                          FetchInitiatorTypeNames::css);
+    if (RuntimeEnabledFeatures::webFontsCacheAwareTimeoutAdaptationEnabled())
+      request.setCacheAwareLoadingEnabled(IsCacheAwareLoadingEnabled);
     request.setContentSecurityCheck(m_shouldCheckContentSecurityPolicy);
     SecurityOrigin* securityOrigin = document->getSecurityOrigin();
     setCrossOriginAccessControl(request, securityOrigin);