Optimize posting of WTF::Closure and improve scheduler test mocks

third_party/WebKit/public/platform/WebTaskRunner.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WebTaskRunner_h
 #define WebTaskRunner_h
 
 #include "WebCommon.h"
 #include "public/platform/WebTraceLocation.h"
 #include <memory>
@@ skipping 48 matching lines @@
     // real time domain.
     virtual double virtualTimeSeconds() const = 0;
 
     // Returns a microsecond resolution platform dependant time source.
     // This may represent either the real time, or a virtual time depending on
     // whether or not the WebTaskRunner is associated with a virtual time domain or a
     // real time domain.
     virtual double monotonicallyIncreasingVirtualTimeSeconds() const = 0;
 
     // Returns the underlying task runner object.
-    virtual SingleThreadTaskRunner* taskRunner() = 0;
+    virtual SingleThreadTaskRunner* toSingleThreadTaskRunner() = 0;
 
 #ifdef INSIDE_BLINK
     // Helpers for posting bound functions as tasks.
 
     // For cross-thread posting. Can be called from any thread.
     void postTask(const WebTraceLocation&, std::unique_ptr<CrossThreadClosure>);
     void postDelayedTask(const WebTraceLocation&, std::unique_ptr<CrossThreadClosure>, long long delayMs);
 
     // For same-thread posting. Must be called from the associated WebThread.
     void postTask(const WebTraceLocation&, std::unique_ptr<WTF::Closure>);
     void postDelayedTask(const WebTraceLocation&, std::unique_ptr<WTF::Closure>, long long delayMs);
 #endif
 };
 
 } // namespace blink
 
 #endif // WebTaskRunner_h