Set WebFont priority to very low if the network is detected to be slow

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

Index: third_party/WebKit/Source/core/fetch/FontResource.cpp
diff --git a/third_party/WebKit/Source/core/fetch/FontResource.cpp b/third_party/WebKit/Source/core/fetch/FontResource.cpp
index 2de0a247cda364998c55aca696d0456f8f37c313..86f9a9fad5012fba0c931fd8816aacc872311495 100644
--- a/third_party/WebKit/Source/core/fetch/FontResource.cpp
+++ b/third_party/WebKit/Source/core/fetch/FontResource.cpp
@@ -175,4 +175,16 @@ void FontResource::checkNotify() {
   Resource::checkNotify();
 }
 
+bool FontResource::isLowPriorityLoadingAllowedForRemoteFont() const {
+  assert(!url().protocolIsData());
+  assert(!isLoaded());

[hiroshige, 2016/11/15 06:05:41]

Please use DCHECK() instead of assert().

[tbansal1, 2016/11/15 08:17:04]

Done. Thanks for catching this.

+  ResourceClientWalker<FontResourceClient> walker(clients());
+  while (FontResourceClient* client = walker.next()) {
+    if (!client->isLowPriorityLoadingAllowedForRemoteFont()) {
+      return false;
+    }
+  }
+  return true;
+}
+
 }  // namespace blink