Issue 4544. Report only unit URI, without URI of library.

compiler/java/com/google/dart/compiler/PrettyErrorFormatter.java

Index: compiler/java/com/google/dart/compiler/PrettyErrorFormatter.java
diff --git a/compiler/java/com/google/dart/compiler/PrettyErrorFormatter.java b/compiler/java/com/google/dart/compiler/PrettyErrorFormatter.java
index 21d6c21d0ace52c570fa4b58fe16c4fbb375d188..947c6f1734f5bb18a36a2ed204a62c27171db687 100644
--- a/compiler/java/com/google/dart/compiler/PrettyErrorFormatter.java
+++ b/compiler/java/com/google/dart/compiler/PrettyErrorFormatter.java
@@ -91,7 +91,7 @@ public class PrettyErrorFormatter extends DefaultErrorFormatter {
             escapePipe(event.getErrorCode().getErrorSeverity().toString()),
             escapePipe(event.getErrorCode().getSubSystem().toString()),
             escapePipe(event.getErrorCode().toString()),
-            escapePipe(sourceFile.getName()),
+            escapePipe(getSourceName(sourceFile)),
             event.getLineNumber(),
             1 + col,
             length,
@@ -153,6 +153,13 @@ public class PrettyErrorFormatter extends DefaultErrorFormatter {
       }
     }
   }
+  
+  private static String getSourceName(Source source) {
+    if (source instanceof UrlDartSource) {
+      return source.getUri().toString();
+    }
+    return source.getName();
+  }
 
   private String escapePipe(String input) {
     StringBuilder result = new StringBuilder();