Remove many calls to Isolate::Current() in the dart embedding api by

runtime/vm/parser.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/parser.h"
 
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/compiler_stats.h"
@@ skipping 3375 matching lines @@
     ExpectToken(Token::kSEMICOLON);
     library_.SetName(name);
   }
 }
 
 
 Dart_Handle Parser::CallLibraryTagHandler(Dart_LibraryTag tag,
                                           intptr_t token_pos,
                                           const String& url,
                                           const Array& import_map) {
-  Dart_LibraryTagHandler handler = Isolate::Current()->library_tag_handler();
+  Isolate* isolate = Isolate::Current();
+  Dart_LibraryTagHandler handler = isolate->library_tag_handler();
   if (handler == NULL) {
     ErrorMsg(token_pos, "no library handler registered");
   }
   Dart_Handle result = handler(tag,
-                               Api::NewLocalHandle(library_),
-                               Api::NewLocalHandle(url),
-                               Api::NewLocalHandle(import_map));
+                               Api::NewLocalHandle(isolate, library_),
+                               Api::NewLocalHandle(isolate, url),
+                               Api::NewLocalHandle(isolate, import_map));
   if (Dart_IsError(result)) {
     Error& prev_error = Error::Handle();
     prev_error ^= Api::UnwrapHandle(result);
     AppendErrorMsg(prev_error, token_pos, "library handler failed");
   }
   return result;
 }
 
 
 void Parser::ParseLibraryImport() {
@@ skipping 4866 matching lines @@
 void Parser::SkipQualIdent() {
   ASSERT(IsIdentifier());
   ConsumeToken();
   if (CurrentToken() == Token::kPERIOD) {
     ConsumeToken();  // Consume the kPERIOD token.
     ExpectIdentifier("identifier expected after '.'");
   }
 }
 
 }  // namespace dart