No longer clamp setTimeout(..., 0) to 1ms.

third_party/WebKit/Source/core/frame/DOMTimer.cpp

Index: third_party/WebKit/Source/core/frame/DOMTimer.cpp
diff --git a/third_party/WebKit/Source/core/frame/DOMTimer.cpp b/third_party/WebKit/Source/core/frame/DOMTimer.cpp
index 9451ccba951849d2fe568875107a722a54d2ab29..43075460836a51f3fc8153a2a76e57c349968df6 100644
--- a/third_party/WebKit/Source/core/frame/DOMTimer.cpp
+++ b/third_party/WebKit/Source/core/frame/DOMTimer.cpp
@@ -88,8 +88,10 @@ DOMTimer::DOMTimer(ExecutionContext* context,
     user_gesture_token_ = UserGestureIndicator::CurrentToken();
   }
 
+  // TODO(delphick): Remove the single shot guard here so that this affects
+  // setInterval as well.
   double interval_milliseconds =
-      std::max(kOneMillisecond, interval * kOneMillisecond);
+      std::max(single_shot ? 0.0 : kOneMillisecond, interval * kOneMillisecond);
   if (interval_milliseconds < kMinimumInterval &&
       nesting_level_ >= kMaxTimerNestingLevel)
     interval_milliseconds = kMinimumInterval;