Revert of Revert "Post loading tasks on the appropriate WebFrameScheduler's queue."

third_party/WebKit/public/platform/WebURLLoader.h

Index: third_party/WebKit/public/platform/WebURLLoader.h
diff --git a/third_party/WebKit/public/platform/WebURLLoader.h b/third_party/WebKit/public/platform/WebURLLoader.h
index eada222a35754d50362a8ff4febd00194fc96adb..3a914237dc4bb02c8d1cbcde8c3ca9ceadbe6a7d 100644
--- a/third_party/WebKit/public/platform/WebURLLoader.h
+++ b/third_party/WebKit/public/platform/WebURLLoader.h
@@ -37,6 +37,7 @@
 namespace blink {
 
 class WebData;
+class WebTaskRunner;
 class WebThreadedDataReceiver;
 class WebURLLoaderClient;
 class WebURLResponse;
@@ -78,6 +79,10 @@
     // of the data receiver is assumed by the WebURLLoader and the receiver should
     // be deleted on the main thread when no longer needed.
     virtual bool attachThreadedDataReceiver(WebThreadedDataReceiver*) { return false; }
+
+    // Sets the task runner for which any loading tasks should be posted on.
+    // Takes ownership of the WebTaskRunner.
+    virtual void setLoadingTaskRunner(WebTaskRunner*) = 0;
 };
 
 } // namespace blink