diff --git a/components/net/image_cache_thread.rs b/components/net/image_cache_thread.rs
index 15f3bd93c38e..3ca281761d45 100644
--- a/components/net/image_cache_thread.rs
+++ b/components/net/image_cache_thread.rs
@@ -394,6 +394,9 @@ impl ImageCache {
                 let result = self.get_image_or_meta_if_available(url, use_placeholder);
                 consumer.send(result).unwrap();
             }
+            ImageCacheCommand::StoreDecodeImage(url, image_vector) => {
+                self.store_decode_image(url, image_vector);
+            }
         };
 
         None
@@ -588,6 +591,23 @@ impl ImageCache {
             }
         }
     }
+
+    fn store_decode_image(&mut self,
+                          ref_url: Url,
+                          loaded_bytes: Vec<u8>) {
+        let (cache_result, load_key, _) = self.pending_loads.get_cached(Arc::new(ref_url));
+        assert!(cache_result == CacheResult::Miss);
+        let action = ResponseAction::DataAvailable(loaded_bytes);
+        let _ = self.progress_sender.send(ResourceLoadInfo {
+            action: action,
+            key: load_key,
+        });
+        let action = ResponseAction::ResponseComplete(Ok(()));
+        let _ = self.progress_sender.send(ResourceLoadInfo {
+            action: action,
+            key: load_key,
+        });
+    }
 }
 
 /// Create a new image cache.
diff --git a/components/net_traits/image_cache_thread.rs b/components/net_traits/image_cache_thread.rs
index 0011cab8e9f5..4b17cce7309a 100644
--- a/components/net_traits/image_cache_thread.rs
+++ b/components/net_traits/image_cache_thread.rs
@@ -92,6 +92,10 @@ pub enum ImageCacheCommand {
     /// state and but its metadata has been made available, it will be sent as a response.
     GetImageOrMetadataIfAvailable(Url, UsePlaceholder, IpcSender<Result<ImageOrMetadataAvailable, ImageState>>),
 
+    /// Instruct the cache to store this data as a newly-complete network request and continue
+    /// decoding the result into pixel data
+    StoreDecodeImage(Url, Vec<u8>),
+
     /// Clients must wait for a response before shutting down the ResourceThread
     Exit(IpcSender<()>),
 }
@@ -157,6 +161,14 @@ impl ImageCacheThread {
         receiver.recv().unwrap()
     }
 
+    /// Decode the given image bytes and cache the result for the given URL.
+    pub fn store_complete_image_bytes(&self,
+                                   url: Url,
+                                   image_data: Vec<u8>) {
+        let msg = ImageCacheCommand::StoreDecodeImage(url, image_data);
+        self.chan.send(msg).unwrap();
+    }
+
     /// Shutdown the image cache thread.
     pub fn exit(&self) {
         let (response_chan, response_port) = ipc::channel().unwrap();
@@ -164,4 +176,3 @@ impl ImageCacheThread {
         response_port.recv().unwrap();
     }
 }
-