DevTools: Handle the F8 shortcut forwarded from the inspected page

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

 var initialize_DebuggerTest = function() {
 
 InspectorTest.startDebuggerTest = function(callback, quiet)
 {
     if (quiet !== undefined)
         InspectorTest._quiet = quiet;
     WebInspector.inspectorView.showPanel("sources");
 
     if (WebInspector.debuggerModel.debuggerEnabled())
         startTest();
@@ skipping 130 matching lines @@
 
     if (!InspectorTest._pausedScriptArguments)
         callback();
     else
         InspectorTest._waitUntilResumedCallback = callback;
 };
 
 InspectorTest.resumeExecution = function(callback)
 {
     if (WebInspector.panels.sources.paused)
-        WebInspector.panels.sources._togglePause();
+        WebInspector.panels.sources.togglePause();
     InspectorTest.waitUntilResumed(callback);
 };
 
 InspectorTest.captureStackTrace = function(callFrames, asyncStackTrace, options)
 {
     InspectorTest.addResult(InspectorTest.captureStackTraceIntoString(callFrames, asyncStackTrace, options));
 };
 
 InspectorTest.captureStackTraceIntoString = function(callFrames, asyncStackTrace, options)
 {
@@ skipping 232 matching lines @@
 InspectorTest.scriptFormatter = function()
 {
     var editorActions = WebInspector.moduleManager.instances(WebInspector.SourcesView.EditorAction);
     for (var i = 0; i < editorActions.length; ++i) {
         if (editorActions[i] instanceof WebInspector.ScriptFormatterEditorAction)
             return editorActions[i];
     }
 };
 
 };