Reduce number of deopts caused by ForceDelete.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 99b0bb8be3de7154f196027c23318782080d7cab..1903e47709a0a0ec315af0b9f238a492b99dd0fd 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -3065,14 +3065,6 @@ bool v8::Object::ForceDelete(v8::Handle<Value> key) {
   i::Handle<i::JSObject> self = Utils::OpenHandle(this);
   i::Handle<i::Object> key_obj = Utils::OpenHandle(*key);
 
-  // When deleting a property on the global object using ForceDelete
-  // deoptimize all functions as optimized code does not check for the hole
-  // value with DontDelete properties.  We have to deoptimize all contexts
-  // because of possible cross-context inlined functions.
-  if (self->IsJSGlobalProxy() || self->IsGlobalObject()) {
-    i::Deoptimizer::DeoptimizeAll(isolate);
-  }
-
   EXCEPTION_PREAMBLE(isolate);
   i::Handle<i::Object> obj;
   has_pending_exception =