[runtime] First step to sanitize regexp literal creation.

src/interface-descriptors.h

Index: src/interface-descriptors.h
diff --git a/src/interface-descriptors.h b/src/interface-descriptors.h
index e6fa4723432847d770644ebd71ea5253e303c7b8..dd1313d7276c93b308758e8c899c6beaac70731d 100644
--- a/src/interface-descriptors.h
+++ b/src/interface-descriptors.h
@@ -30,6 +30,7 @@ class PlatformInterfaceDescriptor;
   V(ToObject)                                 \
   V(NumberToString)                           \
   V(Typeof)                                   \
+  V(FastCloneRegExp)                          \
   V(FastCloneShallowArray)                    \
   V(FastCloneShallowObject)                   \
   V(CreateAllocationSite)                     \
@@ -418,6 +419,13 @@ class TypeofDescriptor : public CallInterfaceDescriptor {
 };
 
 
+class FastCloneRegExpDescriptor : public CallInterfaceDescriptor {
+ public:
+  DECLARE_DESCRIPTOR_WITH_CUSTOM_FUNCTION_TYPE(FastCloneRegExpDescriptor,
+                                               CallInterfaceDescriptor)
+};
+
+
 class FastCloneShallowArrayDescriptor : public CallInterfaceDescriptor {
  public:
   DECLARE_DESCRIPTOR_WITH_CUSTOM_FUNCTION_TYPE(FastCloneShallowArrayDescriptor,