Revert r21141.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index e4ccd75eff7b8bc66b887575ad8a4ea3290ab8c4..33b1bc9301a9dd6fa26f3829e6808c722630d599 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -5711,11 +5711,6 @@ SMI_ACCESSORS(JSGeneratorObject, continuation, kContinuationOffset)
 ACCESSORS(JSGeneratorObject, operand_stack, FixedArray, kOperandStackOffset)
 SMI_ACCESSORS(JSGeneratorObject, stack_handler_index, kStackHandlerIndexOffset)
 
-bool JSGeneratorObject::is_suspended() {
-  ASSERT_LT(kGeneratorExecuting, kGeneratorClosed);
-  ASSERT_EQ(kGeneratorClosed, 0);
-  return continuation() > 0;
-}
 
 JSGeneratorObject* JSGeneratorObject::cast(Object* obj) {
   ASSERT(obj->IsJSGeneratorObject());