Make random clicks in the debugger give the command line input focus.

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

Index: runtime/observatory/lib/src/elements/debugger.dart
diff --git a/runtime/observatory/lib/src/elements/debugger.dart b/runtime/observatory/lib/src/elements/debugger.dart
index 31f064ad2fd5b03a1efbaab89ea62a58c9f8eccc..7b9bc053afd758eb68d056b57e69fc6e6e41e3b7 100644
--- a/runtime/observatory/lib/src/elements/debugger.dart
+++ b/runtime/observatory/lib/src/elements/debugger.dart
@@ -1269,6 +1269,15 @@ class DebuggerPageElement extends ObservatoryElement {
         app.vm.listenEventStream(VM.kIsolateStream, debugger.onEvent);
     _debugSubscriptionFuture =
         app.vm.listenEventStream(VM.kDebugStream, debugger.onEvent);
+
+    onClick.listen((event) {
+      // Random clicks should focus on the text box.  If the user selects
+      // a range, don't interfere.
+      var selection = window.getSelection();
+      if (selection == null || selection.type == 'Caret') {
+        debugger.input.focus();
+      }
+    });
   }
 
   @override