DevTools: Convert inspector-unit tests to use reusable test harness

third_party/WebKit/Source/devtools/front_end/externs.js

Index: third_party/WebKit/Source/devtools/front_end/externs.js
diff --git a/third_party/WebKit/Source/devtools/front_end/externs.js b/third_party/WebKit/Source/devtools/front_end/externs.js
index ce5dd2e324a988bb66deaa3d99f8dc20024f02f3..4d6d197caa19ebabda2a3b301dda14a82ba38908 100644
--- a/third_party/WebKit/Source/devtools/front_end/externs.js
+++ b/third_party/WebKit/Source/devtools/front_end/externs.js
@@ -806,6 +806,9 @@ Terminal.prototype = {
   on: function(eventName, handler) {}
 };
 
+var testRunner = {};
+testRunner.notifyDone = function() {};
+
 // Module namespaces.
 var Accessibility = {};
 var Animation = {};
@@ -844,6 +847,7 @@ var Snippets = {};
 var SourceFrame = {};
 var Sources = {};
 var Terminal = {};
+var TestRunner = {};
 var TextEditor = {};
 var Timeline = {};
 var TimelineModel = {};