Don't request missing favicon on every page request.

webkit/glue/multi_resolution_image_resource_fetcher.h

Index: webkit/glue/multi_resolution_image_resource_fetcher.h
diff --git a/webkit/glue/multi_resolution_image_resource_fetcher.h b/webkit/glue/multi_resolution_image_resource_fetcher.h
index b3164331bb169556f3e922b4d04e3eaa2c7eaf55..d300611166c4a7e47199db6950fd7c29a9454630 100644
--- a/webkit/glue/multi_resolution_image_resource_fetcher.h
+++ b/webkit/glue/multi_resolution_image_resource_fetcher.h
@@ -38,6 +38,9 @@ class MultiResolutionImageResourceFetcher{
   // Unique identifier for the request.
   int id() const { return id_; }
 
+  // HTTP status code upon fetch completion.
+  int http_status_code() { return http_status_code_; }

[sky, 2013/05/03 20:24:54]

const?

[mef, 2013/05/03 21:45:59]

Done.

+
  private:
   // ResourceFetcher::Callback. Decodes the image and invokes callback_.
   void OnURLFetchComplete(const WebKit::WebURLResponse& response,
@@ -48,6 +51,9 @@ class MultiResolutionImageResourceFetcher{
   // Unique identifier for the request.
   const int id_;
 
+  // HTTP status code upon fetch completion.
+  int http_status_code_;
+
   // URL of the image.
   const GURL image_url_;