Implement <webview>.addContentScript/removeContentScript API [1]

extensions/renderer/resources/guest_view/web_view/web_view_api_methods.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This module implements the public-facing API functions for the <webview> tag.
 
 var WebViewInternal = require('webViewInternal').WebViewInternal;
 var WebViewImpl = require('webView').WebViewImpl;
 
 // An array of <webview>'s public-facing API methods. Methods without custom
 // implementations will be given default implementations. Default
 // implementations come from createDefaultApiMethod() in web_view.js.
 var WEB_VIEW_API_METHODS = [
+  // Add content scripts for the guest page.
+  'addContentScripts',
+
   // Navigates to the previous history entry.
   'back',
 
   // Returns whether there is a previous history entry to navigate to.
   'canGoBack',
 
   // Returns whether there is a subsequent history entry to navigate to.
   'canGoForward',
 
   // Clears browsing data for the WebView partition.
@@ skipping 33 matching lines @@
   'isUserAgentOverridden',
 
   // Loads a data URL with a specified base URL used for relative links.
   // Optionally, a virtual URL can be provided to be shown to the user instead
   // of the data URL.
   'loadDataWithBaseUrl',
 
   // Prints the contents of the webview.
   'print',
 
+  // Removes content scripts for the guest page.
+  'removeContentScripts',
+
   // Reloads the current top-level page.
   'reload',
 
   // Override the user agent string used by the webview for guest page requests.
   'setUserAgentOverride',
 
   // Changes the zoom factor of the page.
   'setZoom',
 
   // Changes the zoom mode of the webview.
   'setZoomMode',
 
   // Stops loading the current navigation if one is in progress.
   'stop',
 
   // Ends the current find session.
   'stopFinding',
 
   // Forcibly kills the guest web page's renderer process.
   'terminate'
 ];
 
 // -----------------------------------------------------------------------------
 // Custom API method implementations.
 
+WebViewImpl.prototype.addContentScripts = function() {
+  var args = $Array.concat([this.viewInstanceId], $Array.slice(arguments));

[Devlin, 2015/04/13 19:21:48]

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/a...
seems to think slicing on arguments is bad.  I don't know much more than that,
though.

[Xi Han, 2015/04/14 19:05:52]

Not an expert here, just follow the ways other functions do:(

+  return $Function.apply(WebViewInternal.addContentScripts, null, args);
+};
+
 WebViewImpl.prototype.back = function(callback) {
   return this.go(-1, callback);
 };
 
 WebViewImpl.prototype.canGoBack = function() {
   return this.entryCount > 1 && this.currentEntryIndex > 0;
 };
 
 WebViewImpl.prototype.canGoForward = function() {
   return this.currentEntryIndex >= 0 &&
@@ skipping 39 matching lines @@
               'Error while running webview.loadDataWithBaseUrl: ' +
                   chrome.runtime.lastError.message);
         }
       });
 };
 
 WebViewImpl.prototype.print = function() {
   return this.executeScript({code: 'window.print();'});
 };
 
+WebViewImpl.prototype.removeContentScripts = function(var_args) {
+  var args = $Array.concat([this.viewInstanceId], $Array.slice(arguments));
+  return $Function.apply(WebViewInternal.removeContentScripts, null, args);
+};
+
 WebViewImpl.prototype.setUserAgentOverride = function(userAgentOverride) {
   this.userAgentOverride = userAgentOverride;
   if (!this.guest.getId()) {
     // If we are not attached yet, then we will pick up the user agent on
     // attachment.
     return false;
   }
   WebViewInternal.overrideUserAgent(this.guest.getId(), userAgentOverride);
   return true;
 };
 
 // -----------------------------------------------------------------------------
 
 WebViewImpl.getApiMethods = function() {
   return WEB_VIEW_API_METHODS;
 };