Use hi-resolution favicon variants if available.

webkit/glue/image_resource_fetcher.cc

Index: webkit/glue/image_resource_fetcher.cc
diff --git a/webkit/glue/image_resource_fetcher.cc b/webkit/glue/image_resource_fetcher.cc
index 54d141350ac9eadf2f3eccc9239e04c29d3080cd..31b8cfc24e9571b16278d60f54a4ab59d03461d1 100644
--- a/webkit/glue/image_resource_fetcher.cc
+++ b/webkit/glue/image_resource_fetcher.cc
@@ -28,6 +28,7 @@ ImageResourceFetcher::ImageResourceFetcher(
       id_(id),
       image_url_(image_url),
       image_size_(image_size) {
+fprintf(stderr, " fetching %s %s\n", image_url.host().c_str(), image_url.path().c_str());
   fetcher_.reset(new ResourceFetcher(
       image_url, frame, target_type,
       base::Bind(&ImageResourceFetcher::OnURLFetchComplete,
@@ -44,6 +45,7 @@ void ImageResourceFetcher::OnURLFetchComplete(
     const std::string& data) {
   SkBitmap bitmap;
   if (!response.isNull() && response.httpStatusCode() == 200) {
+fprintf(stderr, " data %x%x%x%x\n", data.data()[0], data.data()[1], data.data()[2], data.data()[3]);
     // Request succeeded, try to convert it to an image.
     ImageDecoder decoder(gfx::Size(image_size_, image_size_));
     bitmap = decoder.Decode(