Fix a bug that could occasionaly cause setInterval to stop

components/scheduler/renderer/throttled_time_domain.h

Index: components/scheduler/renderer/throttled_time_domain.h
diff --git a/components/scheduler/renderer/throttled_time_domain.h b/components/scheduler/renderer/throttled_time_domain.h
index f274e8c081ec5e9deda710b5a06e77bd8b23d45c..083c24b4c363de9a4e856c7c23c8da66ac608353 100644
--- a/components/scheduler/renderer/throttled_time_domain.h
+++ b/components/scheduler/renderer/throttled_time_domain.h
@@ -6,26 +6,25 @@
 #define COMPONENTS_SCHEDULER_RENDERER_THROTTLED_TIME_DOMAIN_H_
 
 #include "base/macros.h"
-#include "components/scheduler/base/virtual_time_domain.h"
+#include "components/scheduler/base/real_time_domain.h"
 
 namespace scheduler {
 
-// A time domain that's mostly a VirtualTimeDomain except that real time is used
-// when computing the delayed runtime.
-class SCHEDULER_EXPORT ThrottledTimeDomain : public VirtualTimeDomain {
+// A time domein for throttled tasks. behaves like an RealTimeDomain except it

[rmcilroy, 2016/07/18 15:22:57]

/s/domein/domain

[alex clarke (OOO till 29th), 2016/07/18 15:35:53]

Done.

+// relies the owner (ThrottlingHelper) to schedule wakeups.

[rmcilroy, 2016/07/18 15:22:57]

s/relies the/relies on the

[alex clarke (OOO till 29th), 2016/07/18 15:35:52]

Done.

+class SCHEDULER_EXPORT ThrottledTimeDomain : public RealTimeDomain {
  public:
   ThrottledTimeDomain(TimeDomain::Observer* observer,
-                      base::TickClock* tick_clock);
+                      const char* tracing_category);
   ~ThrottledTimeDomain() override;
 
-  // TimeDomain implementation:
-  base::TimeTicks ComputeDelayedRunTime(base::TimeTicks time_domain_now,
-                                        base::TimeDelta delay) const override;
   const char* GetName() const override;
 
- private:
-  base::TickClock* const tick_clock_;  // NOT OWNED
+  void RequestWakeup(base::TimeTicks now, base::TimeDelta delay) override;
+
+  bool MaybeAdvanceTime() override;
 
+ private:
   DISALLOW_COPY_AND_ASSIGN(ThrottledTimeDomain);
 };