Merged r19765 into trunk branch.

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index 2b94158db76dacb6109055eed33079f0673c2131..ffc56990a2603400023e03aec1d55adc317921e2 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -9549,7 +9549,6 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_DateCurrentTime) {
   // time is milliseconds. Therefore, we floor the result of getting
   // the OS time.
   double millis = std::floor(OS::TimeCurrentMillis());
-  isolate->date_cache()->CheckTimezone();
   return isolate->heap()->NumberFromDouble(millis);
 }
 
@@ -9596,7 +9595,6 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_DateLocalTimezone) {
   ASSERT(args.length() == 1);
 
   CONVERT_DOUBLE_ARG_CHECKED(x, 0);
-  isolate->date_cache()->CheckTimezone();
   int64_t time = isolate->date_cache()->EquivalentTime(static_cast<int64_t>(x));
   const char* zone = OS::LocalTimezone(static_cast<double>(time));
   return isolate->heap()->AllocateStringFromUtf8(CStrVector(zone));