Move symbol table from per isolate snapshot to vm isolate snapshot, this reduces the per isolate in…

runtime/vm/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_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 461 matching lines @@
   static const LanguageError& snapshot_writer_error() {
     ASSERT(snapshot_writer_error_ != NULL);
     return *snapshot_writer_error_;
   }
 
   static const LanguageError& branch_offset_error() {
     ASSERT(branch_offset_error_ != NULL);
     return *branch_offset_error_;
   }
 
+  static const Array& vm_isolate_snapshot_object_table() {
+    ASSERT(vm_isolate_snapshot_object_table_ != NULL);
+    return *vm_isolate_snapshot_object_table_;
+  }
+  static void InitVmIsolateSnapshotObjectTable(intptr_t len);
+
   static RawClass* class_class() { return class_class_; }
   static RawClass* dynamic_class() { return dynamic_class_; }
   static RawClass* void_class() { return void_class_; }
   static RawType* dynamic_type() { return dynamic_type_; }
   static RawType* void_type() { return void_type_; }
   static RawClass* unresolved_class_class() { return unresolved_class_class_; }
   static RawClass* type_arguments_class() { return type_arguments_class_; }
   static RawClass* patch_class_class() { return patch_class_class_; }
   static RawClass* function_class() { return function_class_; }
   static RawClass* closure_data_class() { return closure_data_class_; }
@@ skipping 291 matching lines @@
   static Array* extractor_parameter_names_;
   static Instance* sentinel_;
   static Instance* transition_sentinel_;
   static Instance* unknown_constant_;
   static Instance* non_constant_;
   static Bool* bool_true_;
   static Bool* bool_false_;
   static Smi* smi_illegal_cid_;
   static LanguageError* snapshot_writer_error_;
   static LanguageError* branch_offset_error_;
+  static Array* vm_isolate_snapshot_object_table_;
 
   friend void ClassTable::Register(const Class& cls);
   friend void RawObject::Validate(Isolate* isolate) const;
   friend class Closure;
   friend class SnapshotReader;
   friend class OneByteString;
   friend class TwoByteString;
   friend class ExternalOneByteString;
   friend class ExternalTwoByteString;
   friend class Isolate;
@@ skipping 6968 matching lines @@
 
 
 RawObject* MegamorphicCache::GetTargetFunction(const Array& array,
                                                intptr_t index) {
   return array.At((index * kEntryLength) + kTargetFunctionIndex);
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_