Fold RestartLoadingTask() into ReadCallback() as the method is called on the render thread.

webkit/media/buffered_resource_loader.cc

Index: webkit/media/buffered_resource_loader.cc
diff --git a/webkit/media/buffered_resource_loader.cc b/webkit/media/buffered_resource_loader.cc
index 424c0d0d2dd70bfc7cceec6b20bbaf69990fd466..7ad3dab636191c8ad6248c93656434c2278fc45c 100644
--- a/webkit/media/buffered_resource_loader.cc
+++ b/webkit/media/buffered_resource_loader.cc
@@ -510,8 +510,7 @@ void BufferedResourceLoader::didFinishLoading(
     return;
   }
 
-  // If there is a pending read but the request has ended, return with what
-  // we have.
+  // Don't leave read callbacks hanging around.
   if (HasPendingRead()) {
     // Try to fulfill with what is in the buffer.
     if (CanFulfillRead())
@@ -519,9 +518,6 @@ void BufferedResourceLoader::didFinishLoading(
     else
       DoneRead(kCacheMiss, 0);
   }
-
-  // There must not be any outstanding read request.
-  DCHECK(!HasPendingRead());
 }
 
 void BufferedResourceLoader::didFail(