Revert of Implement V8Platform::CallDelayedOnForegroundThread.

gin/v8_platform.cc

Index: gin/v8_platform.cc
diff --git a/gin/v8_platform.cc b/gin/v8_platform.cc
index 881be434aa0c4088249b26ed1032933892fd22dd..24a33c8dfc5862ed13aa1f1159e6ac3894bdcb58 100644
--- a/gin/v8_platform.cc
+++ b/gin/v8_platform.cc
@@ -39,14 +39,6 @@
       FROM_HERE, base::Bind(&v8::Task::Run, base::Owned(task)));
 }
 
-void V8Platform::CallDelayedOnForegroundThread(v8::Isolate* isolate,
-                                               v8::Task* task,
-                                               double delay_in_seconds) {
-  PerIsolateData::From(isolate)->task_runner()->PostDelayedTask(
-      FROM_HERE, base::Bind(&v8::Task::Run, base::Owned(task)),
-      base::TimeDelta::FromSecondsD(delay_in_seconds));
-}
-
 double V8Platform::MonotonicallyIncreasingTime() {
   return base::TimeTicks::Now().ToInternalValue() /
       static_cast<double>(base::Time::kMicrosecondsPerSecond);