Revert "No longer OOM on invalid string length."

src/bootstrapper.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 55 matching lines @@
 
   void Add(Vector<const char> name, Handle<SharedFunctionInfo> shared) {
     Isolate* isolate = shared->GetIsolate();
     Factory* factory = isolate->factory();
     HandleScope scope(isolate);
     int length = cache_->length();
     Handle<FixedArray> new_array = factory->NewFixedArray(length + 2, TENURED);
     cache_->CopyTo(0, *new_array, 0, cache_->length());
     cache_ = *new_array;
     Handle<String> str = factory->NewStringFromAscii(name, TENURED);
-    ASSERT(!str.is_null());
     cache_->set(length, *str);
     cache_->set(length + 1, *shared);
     Script::cast(shared->script())->set_type(Smi::FromInt(type_));
   }
 
  private:
   Script::Type type_;
   FixedArray* cache_;
   DISALLOW_COPY_AND_ASSIGN(SourceCodeCache);
 };
@@ skipping 104 matching lines @@
     return length_;
   }
  private:
   const char* data_;
   size_t length_;
 };
 
 }}  // namespace v8::internal
 
 #endif  // V8_BOOTSTRAPPER_H_