[Reland] Per WebViewScheduler virtual time

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 8354eca242672535b65684e9c9b053b6decff659..c5423b6625c2d6893384515e7ba15380fd454912 100644
--- a/third_party/WebKit/Source/platform/Timer.h
+++ b/third_party/WebKit/Source/platform/Timer.h
@@ -67,7 +67,7 @@ public:
     double repeatInterval() const { return m_repeatInterval; }
 
     void augmentRepeatInterval(double delta) {
-        double now = monotonicallyIncreasingTime();
+        double now = timerMonotonicallyIncreasingTime();
         setNextFireTime(now, m_nextFireTime - now + delta);
         m_repeatInterval += delta;
     }
@@ -82,11 +82,13 @@ protected:
 private:
     virtual void fired() = 0;
 
-    virtual WebTaskRunner* timerTaskRunner();
+    virtual WebTaskRunner* timerTaskRunner() const;
 
     NO_LAZY_SWEEP_SANITIZE_ADDRESS
     virtual bool canFire() const { return true; }
 
+    double timerMonotonicallyIncreasingTime() const;
+
     void setNextFireTime(double now, double delay);
 
     void runInternal();