DevTools: refactor and fix bugs for DOMBreakpointsSidebarPane

third_party/WebKit/LayoutTests/http/tests/inspector/debugger-test.js

 function scheduleTestFunction()
 {
     setTimeout(testFunction, 0);
 }
 
 var initialize_DebuggerTest = function() {
 
 InspectorTest.preloadPanel("sources");
 
 InspectorTest.startDebuggerTest = function(callback, quiet)
@@ skipping 153 matching lines @@
         InspectorTest._waitUntilResumedCallback = callback;
 };
 
 InspectorTest.resumeExecution = function(callback)
 {
     if (WebInspector.panels.sources.paused())
         WebInspector.panels.sources._togglePause();
     InspectorTest.waitUntilResumed(callback);
 };
 
+InspectorTest.assertNotPaused = function()
+{
+    InspectorTest.assertEquals(false, WebInspector.panels.sources.paused(), "Assert execution is not paused");
+};
+
 InspectorTest.waitUntilPausedAndDumpStackAndResume = function(callback, options)
 {
     InspectorTest.waitUntilPaused(paused);
     InspectorTest.addSniffer(WebInspector.CallStackSidebarPane.prototype, "_updateStatusMessage", setStatus);
 
     var caption;
     var callFrames;
     var asyncStackTrace;
 
     function setStatus()
@@ skipping 403 matching lines @@
     var listItem = threadsPane._debuggerModelToListItems.get(WebInspector.DebuggerModel.fromTarget(target));
     threadsPane._onListItemClick(listItem);
 }
 
 InspectorTest.evaluateOnCurrentCallFrame = function(code)
 {
     return new Promise(succ => InspectorTest.debuggerModel.evaluateOnSelectedCallFrame(code, "console", false, true, false, false, InspectorTest.safeWrap(succ)));
 }
 
 };