Remove WebCallbackTask

components/test_runner/web_test_delegate.h

Index: components/test_runner/web_test_delegate.h
diff --git a/components/test_runner/web_test_delegate.h b/components/test_runner/web_test_delegate.h
index 145a5efa842138e4892f04fb182e4d4735d0073f..e01b95ff55009db202a8bfd14762b5c675f3dc7f 100644
--- a/components/test_runner/web_test_delegate.h
+++ b/components/test_runner/web_test_delegate.h
@@ -83,9 +83,8 @@ class WebTestDelegate {
 
   // The delegate takes ownership of the WebTask objects and is responsible
   // for deleting them.
-  virtual void PostTask(blink::WebTaskRunner::Task* task) = 0;
-  virtual void PostDelayedTask(blink::WebTaskRunner::Task* task,
-                               long long ms) = 0;
+  virtual void PostTask(const base::Closure& task) = 0;
+  virtual void PostDelayedTask(const base::Closure& task, long long ms) = 0;
 
   // Register a new isolated filesystem with the given files, and return the
   // new filesystem id.