Make WebTaskRunner ThreadSafeRefCounted

third_party/WebKit/Source/platform/Timer.h

Index: third_party/WebKit/Source/platform/Timer.h
diff --git a/third_party/WebKit/Source/platform/Timer.h b/third_party/WebKit/Source/platform/Timer.h
index f47850006eee7b95246b7f55f44dde74a7650964..13b20e7de0b1e292dafc22c5bd853c6c22c05c7a 100644
--- a/third_party/WebKit/Source/platform/Timer.h
+++ b/third_party/WebKit/Source/platform/Timer.h
@@ -46,7 +46,7 @@ class PLATFORM_EXPORT TimerBase {
   WTF_MAKE_NONCOPYABLE(TimerBase);
 
  public:
-  explicit TimerBase(WebTaskRunner*);
+  explicit TimerBase(RefPtr<WebTaskRunner>);
   virtual ~TimerBase();
 
   void start(double nextFireInterval,
@@ -80,13 +80,13 @@ class PLATFORM_EXPORT TimerBase {
   };
 
  protected:
-  static WebTaskRunner* getTimerTaskRunner();
-  static WebTaskRunner* getUnthrottledTaskRunner();
+  static RefPtr<WebTaskRunner> getTimerTaskRunner();
+  static RefPtr<WebTaskRunner> getUnthrottledTaskRunner();
 
  private:
   virtual void fired() = 0;
 
-  virtual WebTaskRunner* timerTaskRunner() const;
+  virtual RefPtr<WebTaskRunner> timerTaskRunner() const;
 
   NO_SANITIZE_ADDRESS
   virtual bool canFire() const { return true; }
@@ -100,7 +100,7 @@ class PLATFORM_EXPORT TimerBase {
   double m_nextFireTime;    // 0 if inactive
   double m_repeatInterval;  // 0 if not repeating
   WebTraceLocation m_location;
-  std::unique_ptr<WebTaskRunner> m_webTaskRunner;
+  RefPtr<WebTaskRunner> m_webTaskRunner;
 
 #if DCHECK_IS_ON()
   ThreadIdentifier m_thread;
@@ -131,10 +131,10 @@ class TaskRunnerTimer : public TimerBase {
  public:
   using TimerFiredFunction = void (TimerFiredClass::*)(TimerBase*);
 
-  TaskRunnerTimer(WebTaskRunner* webTaskRunner,
+  TaskRunnerTimer(RefPtr<WebTaskRunner> webTaskRunner,
                   TimerFiredClass* o,
                   TimerFiredFunction f)
-      : TimerBase(webTaskRunner), m_object(o), m_function(f) {}
+      : TimerBase(std::move(webTaskRunner)), m_object(o), m_function(f) {}
 
   ~TaskRunnerTimer() override {}