<webview>: Move back, forward, canGoBack, canGoForward, go from content to chrome

content/test/data/browser_plugin_embedder.html

Index: content/test/data/browser_plugin_embedder.html
diff --git a/content/test/data/browser_plugin_embedder.html b/content/test/data/browser_plugin_embedder.html
index 914c12a67769603b35389228ff972c081e003d12..85ad2dbaa997420f4203c715ce259129e18342d3 100644
--- a/content/test/data/browser_plugin_embedder.html
+++ b/content/test/data/browser_plugin_embedder.html
@@ -43,26 +43,6 @@ function PostMessage(data, shouldTargetIframe) {
     plugin.contentWindow.frames.postMessage('testing123', '*');
   }
 }
-function Back() {
-  var plugin = document.getElementById('plugin');
-  plugin.back();
-}
-function CanGoBack() {
-  var plugin = document.getElementById('plugin');
-  return plugin.canGoBack();
-}
-function CanGoForward() {
-  var plugin = document.getElementById('plugin');
-  return plugin.canGoForward();
-}
-function Forward() {
-  var plugin = document.getElementById('plugin');
-  plugin.forward();
-}
-function Go(relativeIndex) {
-  var plugin = document.getElementById('plugin');
-  plugin.go(relativeIndex);
-}
 function SetTitle(str) {
   document.title = str;
 }