Step back and remove more getNode() invocations

compiler/java/com/google/dart/compiler/DartCompiler.java

 // 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.
 
 package com.google.dart.compiler;
 
 import com.google.common.collect.Lists;
 import com.google.common.collect.Sets;
 import com.google.common.collect.Sets.SetView;
 import com.google.common.io.CharStreams;
@@ skipping 673 matching lines @@
       Element element = lib.getElement().lookupLocalElement(MAIN_ENTRY_POINT_NAME);
       switch (ElementKind.of(element)) {
         case NONE:
           // this is ok, it might just be a library
           break;
 
         case METHOD:
           MethodElement methodElement = (MethodElement) element;
           Modifiers modifiers = methodElement.getModifiers();
           if (modifiers.isGetter()) {
-            context.onError(new DartCompilationError(element.getNode(),
+            context.onError(new DartCompilationError(element,
                 DartCompilerErrorCode.ENTRY_POINT_METHOD_MAY_NOT_BE_GETTER, MAIN_ENTRY_POINT_NAME));
           } else if (modifiers.isSetter()) {
-            context.onError(new DartCompilationError(element.getNode(),
+            context.onError(new DartCompilationError(element,
                 DartCompilerErrorCode.ENTRY_POINT_METHOD_MAY_NOT_BE_SETTER, MAIN_ENTRY_POINT_NAME));
           } else if (methodElement.getParameters().size() > 0) {
-            context.onError(new DartCompilationError(element.getNode(),
+            context.onError(new DartCompilationError(element,
                 DartCompilerErrorCode.ENTRY_POINT_METHOD_CANNOT_HAVE_PARAMETERS,
                 MAIN_ENTRY_POINT_NAME));
           } else {
             lib.getElement().setEntryPoint(methodElement);
           }
           break;
 
         default:
-          context.onError(new DartCompilationError(element.getNode(),
+          context.onError(new DartCompilationError(element,
               ResolverErrorCode.NOT_A_STATIC_METHOD, MAIN_ENTRY_POINT_NAME));
           break;
       }
     }
 
     private void compileLibraries() throws IOException {
       TraceEvent logEvent =
           Tracer.canTrace() ? Tracer.start(DartEventType.COMPILE_LIBRARIES) : null;
 
       CompilerMetrics compilerMetrics = context.getCompilerMetrics();
@@ skipping 508 matching lines @@
         return unit;
       }
     }
     return null;
   }
 
   public static LibraryUnit getCoreLib(LibraryUnit libraryUnit) {
     return findLibrary(libraryUnit, "dart:core", new HashSet<LibraryElement>());
   }
 }