plugins: Show a help link in the "plugin needed" infobar.

chrome/browser/plugin_installer.h

Index: chrome/browser/plugin_installer.h
diff --git a/chrome/browser/plugin_installer.h b/chrome/browser/plugin_installer.h
index 8760c4f1807d060c94cd874b7059389178d72b1b..77f3804dcfbd1b89ba1707537624bc1c036daa96 100644
--- a/chrome/browser/plugin_installer.h
+++ b/chrome/browser/plugin_installer.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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.
 
@@ -27,6 +27,8 @@ class PluginInstaller : public ConfirmInfoBarDelegate {
   virtual int GetButtons() const;
   virtual std::wstring GetButtonLabel(InfoBarButton button) const;
   virtual bool Accept();
+  virtual std::wstring GetLinkText();
+  virtual bool LinkClicked(WindowOpenDisposition disposition);
 
   // The containing TabContents
   TabContents* tab_contents_;