Change MirrorSystem.libraries to Map<Uri, String>

sdk/lib/_internal/compiler/implementation/source_file_provider.dart

Index: sdk/lib/_internal/compiler/implementation/source_file_provider.dart
diff --git a/sdk/lib/_internal/compiler/implementation/source_file_provider.dart b/sdk/lib/_internal/compiler/implementation/source_file_provider.dart
index 4157fc9e45175efcba141395e9aa0afd88c51f39..609cf1c2230dc9ccec01ab4eb23257e6911dbb4b 100644
--- a/sdk/lib/_internal/compiler/implementation/source_file_provider.dart
+++ b/sdk/lib/_internal/compiler/implementation/source_file_provider.dart
@@ -27,7 +27,6 @@ String readAll(String filename) {
 
 class SourceFileProvider {
   bool isWindows = (Platform.operatingSystem == 'windows');
-  Uri cwd = getCurrentDirectory();

[ahe, 2013/04/09 08:28:44]

I think it makes sense to keep the local variable.

[Johnni Winther, 2013/04/22 13:00:02]

Done.

   Map<String, SourceFile> sourceFiles = <String, SourceFile>{};
   int dartCharactersRead = 0;
 
@@ -39,12 +38,13 @@ class SourceFileProvider {
     try {
       source = readAll(uriPathToNative(resourceUri.path));
     } on FileIOException catch (ex) {
-      throw 'Error: Cannot read "${relativize(cwd, resourceUri, isWindows)}" '
+      throw 'Error: Cannot read '
+            '"${relativize(currentDirectory, resourceUri, isWindows)}" '
             '(${ex.osError}).';
     }
     dartCharactersRead += source.length;
-    sourceFiles[resourceUri.toString()] =
-      new SourceFile(relativize(cwd, resourceUri, isWindows), source);
+    sourceFiles[resourceUri.toString()] = new SourceFile(
+        relativize(currentDirectory, resourceUri, isWindows), source);
     return new Future.immediate(source);
   }
 }