Add IPC message to open chrome://plugins from a missing plug-in placeholder.

chrome/renderer/resources/disabled_plugin.html

Index: chrome/renderer/resources/disabled_plugin.html
diff --git a/chrome/renderer/resources/disabled_plugin.html b/chrome/renderer/resources/disabled_plugin.html
index 579aa7c3df84237f68e53832802e7f663d0f824a..ad035cadf271cab16e781e8d4d07158fd9758c76 100644
--- a/chrome/renderer/resources/disabled_plugin.html
+++ b/chrome/renderer/resources/disabled_plugin.html
@@ -88,7 +88,7 @@ p {
 <div id="inner">
 <div><img id="plugin_icon" src="plugin_blocked.png" /></div>
 <h1 id="message" i18n-content="message">PLUGIN DISABLED (chrome://plugins)</h1>
-<div id="enable_link"><a href="" onclick="plugin.openURL('chrome://plugins');">chrome://plugins</a></div>
+<div id="enable_link"><a href="#" onclick="plugin.openAboutPlugins();">chrome://plugins</a></div>
 <p id="debug"> </p>
 </div>
 <div id="close" i18n-values="title:hide" onclick="plugin.hide();" />