VM: Remove unused script_ field from Library objects.

runtime/vm/raw_object.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_RAW_OBJECT_H_
 #define VM_RAW_OBJECT_H_
 
 #include "platform/assert.h"
 #include "vm/atomic.h"
 #include "vm/globals.h"
@@ skipping 1022 matching lines @@
     kLoadInProgress,  // Library is in the process of being loaded.
     kLoaded,          // Library is loaded.
     kLoadError,       // Error occurred during load of the Library.
   };
 
   RAW_HEAP_OBJECT_IMPLEMENTATION(Library);
 
   RawObject** from() { return reinterpret_cast<RawObject**>(&ptr()->name_); }
   RawString* name_;
   RawString* url_;
-  RawScript* script_;
   RawString* private_key_;
   RawArray* dictionary_;         // Top-level names in this library.
   RawGrowableObjectArray* metadata_;  // Metadata on classes, methods etc.
   RawClass* toplevel_class_;     // Class containing top-level elements.
   RawGrowableObjectArray* patch_classes_;
   RawArray* imports_;            // List of Namespaces imported without prefix.
   RawArray* exports_;            // List of re-exported Namespaces.
   RawInstance* load_error_;      // Error iff load_state_ == kLoadError.
   RawObject** to_snapshot() {
     return reinterpret_cast<RawObject**>(&ptr()->load_error_);
@@ skipping 1367 matching lines @@
   COMPILE_ASSERT(kExternalTypedDataInt8ArrayCid ==
                  kTypedDataInt8ArrayViewCid + 15);
   COMPILE_ASSERT(kByteBufferCid == kExternalTypedDataInt8ArrayCid + 14);
   COMPILE_ASSERT(kNullCid == kByteBufferCid + 1);
   return (kNullCid - kTypedDataInt8ArrayCid);
 }
 
 }  // namespace dart
 
 #endif  // VM_RAW_OBJECT_H_