Fix for issue 7089 (Symbols::New was not quite working correctly

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 3801 matching lines @@
   // an Array object or a regular Object so that it can be traversed during
   // garbage collection.
   RawString* MakeExternal(void* array,
                           intptr_t length,
                           void* peer,
                           Dart_PeerFinalizer cback) const;
 
 
   // Creates a new String object from a C string that is assumed to contain
   // UTF-8 encoded characters and '\0' is considered a termination character.
+  // TODO(asiva) - Maybe rename this to FromCString(....).
   static RawString* New(const char* cstr, Heap::Space space = Heap::kNew);
 
   // Creates a new String object from an array of UTF-8 encoded characters.
-  static RawString* New(const uint8_t* utf8_array,
+  static RawString* FromUTF8(const uint8_t* utf8_array,
+                             intptr_t array_len,
+                             Heap::Space space = Heap::kNew);
+
+  // Creates a new String object from an array of Latin-1 encoded characters.
+  static RawString* New(const uint8_t* latin1_array,
                         intptr_t array_len,
                         Heap::Space space = Heap::kNew);
 
   // Creates a new String object from an array of UTF-16 encoded characters.
   static RawString* New(const uint16_t* utf16_array,
                         intptr_t array_len,
                         Heap::Space space = Heap::kNew);
 
   // Creates a new String object from an array of UTF-32 encoded characters.
   static RawString* New(const int32_t* utf32_array,
@@ skipping 2137 matching lines @@
     if (this->CharAt(i) != str.CharAt(begin_index + i)) {
       return false;
     }
   }
   return true;
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_