[DevTools] Tuned console completion filter to allow non-ascii properties auto-completion.

Source/devtools/front_end/RuntimeModel.js

Index: Source/devtools/front_end/RuntimeModel.js
diff --git a/Source/devtools/front_end/RuntimeModel.js b/Source/devtools/front_end/RuntimeModel.js
index cd57c51f828d97119165908ad9a7d43944608269..d9b17bbe333b49c0659287a538841911e5c0485e 100644
--- a/Source/devtools/front_end/RuntimeModel.js
+++ b/Source/devtools/front_end/RuntimeModel.js
@@ -302,7 +302,8 @@ WebInspector.RuntimeModel.prototype = {
         for (var i = 0; i < properties.length; ++i) {
             var property = properties[i];
 
-            if (dotNotation && !/^[a-zA-Z_$][a-zA-Z0-9_$]*$/.test(property))
+            // Assume that all non-ASCII characters are letters and thus can be used as part of identifier.
+            if (dotNotation && !/^[a-zA-Z_$\u008F-\uFFFF][a-zA-Z0-9_$\u008F-\uFFFF]*$/.test(property))
                 continue;
 
             if (bracketNotation) {