https://bugs.webkit.org/show_bug.cgi?id=69924

Reviewed by Pavel Feldman.

- added 'Add to Watch' context menu item in scripts panel;
- include both default and custom items into a context menu if selection is present;

* inspector/front-end/ScriptsPanel.js:
(WebInspector.SourceFrameDelegateForScriptsPanel.prototype.suggestedFileName):
(WebInspector.SourceFrameDelegateForScriptsPanel.prototype.addToWatch):
* inspector/front-end/SourceFrame.js:
(WebInspector.SourceFrame.prototype.populateSelectionContextMenu):
(WebInspector.TextViewerDelegateForSourceFrame.prototype.populateSelectionContextMenu):
(WebInspector.SourceFrameDelegate.prototype.suggestedFileName):
(WebInspector.SourceFrameDelegate.prototype.addToWatch):
* inspector/front-end/TextViewer.js:
(WebInspector.TextViewer.prototype._contextMenu):
(WebInspector.TextViewerDelegate.prototype.populateSelectionContextMenu):
* inspector/front-end/WatchExpressionsSidebarPane.js:
(WebInspector.WatchExpressionsSidebarPane.prototype.addExpression):
(WebInspector.WatchExpressionsSidebarPane.prototype._addButtonClicked):
(WebInspector.WatchExpressionsSection.prototype.addExpression):
(WebInspector.WatchExpressionsSection.prototype.addNewExpressionAndEdit):
* page/ContextMenuController.cpp:
(WebCore::ContextMenuController::showContextMenu):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@98233 268f45cc-cd09-0410-ab3c-d52691b4dbfc