Prevent "complete" file from being cached across compilation sessions to save space

editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/utilities/compiler/NullWriter.java

Index: editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/utilities/compiler/NullWriter.java
===================================================================
--- editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/utilities/compiler/NullWriter.java	(revision 0)
+++ editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/utilities/compiler/NullWriter.java	(revision 0)
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2011 Dart project authors.
+ * 
+ * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ * 
+ * http://www.eclipse.org/legal/epl-v10.html
+ * 
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.google.dart.tools.core.utilities.compiler;
+
+import java.io.IOException;
+import java.io.Writer;
+
+/**
+ * A writer that discards anything written to it.
+ */
+public final class NullWriter extends Writer {
+  @Override
+  public void close() throws IOException {
+  }
+
+  @Override
+  public void flush() throws IOException {
+  }
+
+  @Override
+  public void write(char[] cbuf, int off, int len) throws IOException {
+  }
+}