Cancel the request when URLLoader is gone

content/browser/loader/mojo_async_resource_handler.h

Index: content/browser/loader/mojo_async_resource_handler.h
diff --git a/content/browser/loader/mojo_async_resource_handler.h b/content/browser/loader/mojo_async_resource_handler.h
index 5df87fd090e81f1ab617e58f8578d237cec72d17..87278b9429580a2c7625f1e50338d8174607e32a 100644
--- a/content/browser/loader/mojo_async_resource_handler.h
+++ b/content/browser/loader/mojo_async_resource_handler.h
@@ -68,7 +68,6 @@ class CONTENT_EXPORT MojoAsyncResourceHandler
 
   // mojom::URLLoader implementation
   void FollowRedirect() override;
-  void Cancel() override;
 
   void ResumeForTesting();
   static void SetAllocationSizeForTesting(size_t size);
@@ -96,6 +95,7 @@ class CONTENT_EXPORT MojoAsyncResourceHandler
   void OnDefer();
   bool CheckForSufficientResource();
   void OnWritable(MojoResult result);
+  void Cancel();
 
   ResourceDispatcherHostImpl* rdh_;
   mojo::Binding<mojom::URLLoader> binding_;