Revert of Make canceling Timers fast.

third_party/WebKit/public/platform/WebTaskRunner.h

Index: third_party/WebKit/public/platform/WebTaskRunner.h
diff --git a/third_party/WebKit/public/platform/WebTaskRunner.h b/third_party/WebKit/public/platform/WebTaskRunner.h
index fa2705bc49e088362cb6c46bc38348368cf6ccf8..d2f948968cd77482e0233576e9277aaee46ebd9a 100644
--- a/third_party/WebKit/public/platform/WebTaskRunner.h
+++ b/third_party/WebKit/public/platform/WebTaskRunner.h
@@ -39,10 +39,6 @@
     // Schedule a task to be run after |delayMs| on the the associated WebThread.
     // Takes ownership of |Task|. Can be called from any thread.
     virtual void postDelayedTask(const WebTraceLocation&, Task*, double delayMs) = 0;
-
-    // Schedule a task to be run after |delayMs| on the the associated WebThread.
-    // Can be called from any thread.
-    virtual void postDelayedTask(const WebTraceLocation&, const base::Closure&, double delayMs) = 0;
 
     // Returns a clone of the WebTaskRunner.
     virtual std::unique_ptr<WebTaskRunner> clone() = 0;