Improve the display of data: URIs in stack traces.

lib/src/frame.dart

Index: lib/src/frame.dart
diff --git a/lib/src/frame.dart b/lib/src/frame.dart
index 072983a1b3c03ad4a63268fe529fa9eae4e0f267..4077c7cba54318863a6f6799daf5bac5c5f30fcb 100644
--- a/lib/src/frame.dart
+++ b/lib/src/frame.dart
@@ -95,8 +95,11 @@ class Frame {
   /// comes from.
   ///
   /// This will usually be the string form of [uri], but a relative URI will be
-  /// used if possible.
-  String get library => path.prettyUri(uri);
+  /// used if possible. Data URIs will be truncated.
+  String get library {
+    if (uri.scheme == 'data') return "data:...";
+    return path.prettyUri(uri);
+  }
 
   /// Returns the name of the package this stack frame comes from, or `null` if
   /// this stack frame doesn't come from a `package:` URL.