[DevTools] reworked JavaScriptBreakpointsSidebarPane.js

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 407 matching lines @@
 {
     if (!sourceFrame._muted)
         sourceFrame._setBreakpoint(lineNumber, 0, condition, enabled);
 };
 
 InspectorTest.removeBreakpoint = function(sourceFrame, lineNumber)
 {
     sourceFrame._breakpointManager.findBreakpoints(sourceFrame._uiSourceCode, lineNumber)[0].remove();
 };
 
+InspectorTest.waitBreakpointSidebarPane = function()
+{
+    return new Promise(resolve => InspectorTest.addSniffer(Sources.JavaScriptBreakpointsSidebarPane.prototype, "_didUpdateForTest", resolve));
+}
+
+InspectorTest.breakpointsSidebarPaneContent = function()
+{
+    var paneElement = self.runtime.sharedInstance(Sources.JavaScriptBreakpointsSidebarPane).contentElement;
+    var empty = paneElement.querySelector('.gray-info-message');
+    if (empty)
+        return InspectorTest.textContentWithLineBreaks(empty);
+    var entries = Array.from(paneElement.querySelectorAll('.breakpoint-entry'));
+    return entries.map(InspectorTest.textContentWithLineBreaks).join('\n');
+}
+
 InspectorTest.dumpBreakpointSidebarPane = function(title)
 {
-    var paneElement = self.runtime.sharedInstance(Sources.JavaScriptBreakpointsSidebarPane).element;
     InspectorTest.addResult("Breakpoint sidebar pane " + (title || ""));
-    InspectorTest.addResult(InspectorTest.textContentWithLineBreaks(paneElement));
+    InspectorTest.addResult(InspectorTest.breakpointsSidebarPaneContent());
 };
 
 InspectorTest.dumpScopeVariablesSidebarPane = function()
 {
     InspectorTest.addResult("Scope variables sidebar pane:");
     var sections = InspectorTest.scopeChainSections();
     for (var i = 0; i < sections.length; ++i) {
         var textContent = InspectorTest.textContentWithLineBreaks(sections[i].element);
         var text = InspectorTest.clearSpecificInfoFromStackFrames(textContent);
         if (text.length > 0)
@@ skipping 153 matching lines @@
     var listItem = threadsPane._listItemForTarget(target);
     threadsPane._onListItemClick(listItem);
 }
 
 InspectorTest.evaluateOnCurrentCallFrame = function(code)
 {
     return new Promise(succ => InspectorTest.debuggerModel.evaluateOnSelectedCallFrame(code, "console", false, true, false, false, InspectorTest.safeWrap(succ)));
 }
 
 };