Small cleanup: move all library private key code to Library class

runtime/vm/scanner.cc

 // 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.
 
 #include "vm/scanner.h"
 
 #include "platform/assert.h"
 #include "vm/dart.h"
 #include "vm/flags.h"
 #include "vm/object.h"
@@ skipping 294 matching lines @@
         return;
       }
     }
     i++;
   }
 
   // We did not read a keyword.
   current_token_.kind = Token::kIDENT;
   String& literal =
       String::ZoneHandle(Symbols::New(source_, ident_pos, ident_length));
-  if (ident_char0 == kPrivateIdentifierStart) {
+  if (ident_char0 == Library::kPrivateIdentifierStart) {
     // Private identifiers are mangled on a per library basis.
     literal = String::Concat(literal, private_key_);
     literal = Symbols::New(literal);
   }
   current_token_.literal = &literal;
 }
 
 
 // Parse integer or double number literal of format:
 // NUMBER = INTEGER | DOUBLE
@@ skipping 599 matching lines @@
     if (currentLine != td.position.line) {
       currentLine = td.position.line;
       OS::Print("\n%d (%d): ", currentLine, i);
     }
     OS::Print("%s ", Token::Name(td.kind));
   }
   OS::Print("\n");
 }
 
 
-RawString* Scanner::AllocatePrivateKey(const Library& library) {
-  const String& url = String::Handle(library.url());
-  intptr_t key_value = url.Hash();
-  while (Library::IsKeyUsed(key_value)) {
-    key_value++;
-  }
-  char private_key[32];
-  OS::SNPrint(private_key, sizeof(private_key),
-              "%c%#" Px "", kPrivateKeySeparator, key_value);
-  const String& result = String::Handle(String::New(private_key, Heap::kOld));
-  return result.raw();
-}
-
-
 void Scanner::InitOnce() {
   ASSERT(Isolate::Current() == Dart::vm_isolate());
   for (int i = 0; i < Token::numKeywords; i++) {
     Token::Kind token = static_cast<Token::Kind>(Token::kFirstKeyword + i);
     keywords_[i].kind = token;
     keywords_[i].keyword_chars = Token::Str(token);
     keywords_[i].keyword_len = strlen(Token::Str(token));
     keywords_[i].keyword_symbol = &Symbols::Keyword(token);
   }
 }
 
 }  // namespace dart