DevTools: Use targetManager.inspectedPageUrl() instead of resourceTreeModel.inspectedPageUrl()

LayoutTests/inspector/sources/debugger/breakpoint-manager.js

 var initialize_BreakpointManagerTest = function() {
 
 InspectorTest.uiSourceCodes = {};
 
 InspectorTest.dumpTargetIds = false;
 
 InspectorTest.initializeDefaultMappingOnTarget = function(target)
 {
     var defaultMapping = {
         rawLocationToUILocation: function(rawLocation)
@@ skipping 16 matching lines @@
     target.defaultMapping = defaultMapping;
 }
 
 InspectorTest.createMockTarget = function(id)
 {
     var target = {
         id: function()
         {
             return id;
         },
-
+        resourceTreeModel: new WebInspector.Object(),
         addEventListener: function() { },
         removeEventListener: function() { },
         dispose: function() { },
         isDetached: function() { return !!this.detached; }
     };
     target._modelByConstructor = new Map();
     InspectorTest.initializeDefaultMappingOnTarget(target);
     target.debuggerModel = new InspectorTest.DebuggerModelMock(target, target.defaultMapping, InspectorTest.testDebuggerWorkspaceBinding);
     target.debuggerModel._target = target;
     return target;
@@ skipping 351 matching lines @@
     }
 
     function finish()
     {
         InspectorTest.dumpBreakpointLocations(breakpointManager);
         next();
     }
 }
 
 }