Fix analysis server caching edge case http://code.google.com/p/dart/issues/detail?id=3423

editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/analysis/Context.java

Index: editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/analysis/Context.java
===================================================================
--- editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/analysis/Context.java	(revision 8521)
+++ editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/analysis/Context.java	(working copy)
@@ -19,8 +19,6 @@
 
 import java.io.File;
 import java.io.IOException;
-import java.io.LineNumberReader;
-import java.io.PrintWriter;
 import java.net.URI;
 import java.util.ArrayList;
 import java.util.Collection;
@@ -263,9 +261,9 @@
   /**
    * Reload cached libraries
    */
-  void readCache(LineNumberReader reader) throws IOException {
+  void readCache(CacheReader reader) throws IOException {
     while (true) {
-      String filePath = reader.readLine();
+      String filePath = reader.readString();
       if (filePath == null) {
         throw new IOException("Expected " + END_CACHE_TAG + " but found EOF");
       }
@@ -282,15 +280,15 @@
    * Write information for each cached library. Don't include unresolved libraries so that listeners
    * will be notified when the cache is reloaded.
    */
-  void writeCache(PrintWriter writer) {
+  void writeCache(CacheWriter writer) {
     for (Entry<File, Library> entry : libraryCache.entrySet()) {
       Library library = entry.getValue();
       if (library.hasBeenResolved()) {
-        writer.println(entry.getKey().getPath());
+        writer.writeString(entry.getKey().getPath());
         library.writeCache(writer);
       }
     }
-    writer.println(END_CACHE_TAG);
+    writer.writeString(END_CACHE_TAG);
   }
 
   private Library[] append(Library[] oldArray, Library library) {