REGRESSION(r157081): Fix multipart handling of ResourceFetcher

Source/core/loader/DocumentLoader.cpp

Index: Source/core/loader/DocumentLoader.cpp
diff --git a/Source/core/loader/DocumentLoader.cpp b/Source/core/loader/DocumentLoader.cpp
index e57453a91dbb40af78a00c064845f893fed506fb..9363f43c5e4d81f6ce3a4f43e43e3d7fbe158a2c 100644
--- a/Source/core/loader/DocumentLoader.cpp
+++ b/Source/core/loader/DocumentLoader.cpp
@@ -188,8 +188,11 @@ void DocumentLoader::stopLoading()
             m_frame->loader().stopLoading();
     }
 
-    if (!loading)
+    if (!loading) {
+        // This is needed to cancel multipart loading which can be happening even after the frame is loaded.
+        m_fetcher->stopFetching();

[Nate Chapin, 2014/04/18 18:10:29]

Is the ordering of this call important? If not, I'd favor moving this
stopFetching() call above this if() block and removing the stopFetching() call
at the end of the function.

         return;
+    }
 
     if (m_loadingMainResource) {
         // Stop the main resource loader and let it send the cancelled message.