Make copying from script insets omit line numbers and breakpoint indicators.

runtime/observatory/lib/src/elements/script_inset.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library script_inset_element;
 
 import 'dart:async';
 import 'dart:html';
 import 'observatory_element.dart';
 import 'service_ref.dart';
@@ skipping 297 matching lines @@
     computeAnnotations();
 
     var table = linesTable();
     if (container == null) {
       // Indirect to avoid deleting the style element.
       container = new DivElement();
       shadowRoot.append(container);
     }
     container.children.clear();
     container.children.add(table);
+    makeCssClassUncopyable(table, "noCopy");
   }
 
   void loadFunctionsOf(Library lib) {
     lib.load().then((lib) {
       for (var func in lib.functions) {
         func.load();
       }
       for (var cls in lib.classes) {
         cls.load().then((cls) {
           for (var func in cls.functions) {
@@ skipping 114 matching lines @@
     e.append(lineNumberElement(line));
     e.append(lineSourceElement(line));
     return e;
   }
 
   Element lineBreakpointElement(ScriptLine line) {
     var e = new DivElement();
     var busy = false;
     if (line == null || !line.possibleBpt) {
       e.classes.add("emptyBreakpoint");
+      e.classes.add('noCopy');
       e.text = nbsp;
       return e;
     }
     e.text = 'B';
     update() {
+      e.classes.clear();
+      e.classes.add('noCopy');
+
       if (busy) {
-        e.classes.clear();
         e.classes.add("busyBreakpoint");
       } else {
         if (line.breakpoints != null) {
           if (line.breakpointResolved) {
-            e.classes.clear();
             e.classes.add("resolvedBreakpoint");
           } else {
-            e.classes.clear();
             e.classes.add("unresolvedBreakpoint");
           }
         } else {
-          e.classes.clear();
           e.classes.add("possibleBreakpoint");
         }
       }
     }
     line.changes.listen((_) => update());
     e.onClick.listen((event) {
       if (busy) {
         return;
       }
       busy = true;
@@ skipping 16 matching lines @@
       }
       update();
     });
     update();
     return e;
   }
 
   Element lineNumberElement(ScriptLine line) {
     var lineNumber = line == null ? "..." : line.line;
     var e = span("$nbsp$lineNumber$nbsp");
+    e.classes.add('noCopy');
 
     if ((line == null) || (line.hits == null)) {
       hitsUnknown(e);
     } else if (line.hits == 0) {
       hitsNotExecuted(e);
     } else {
       hitsExecuted(e);
     }
 
     return e;
@@ skipping 29 matching lines @@
 
       // TODO(rmacnak): Tolerate overlapping annotations.
       var annotation;
       while ((annotation = nextAnnotationOnLine(line.line)) != null) {
         consumeUntil(annotation.columnStart);
         annotation.applyStyleTo(consumeUntil(annotation.columnStop));
       }
       consumeUntil(line.text.length);
     }
 
+    // So blank lines are included when copying script to the clipboard.
+    e.append(span('\n'));
+
     return e;
   }
 
   ScriptInsetElement.created() : super.created();
 }