Add PluginInstaller to encapsulate information about a missing plug-in.

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
new file mode 100644
index 0000000000000000000000000000000000000000..69f4a58ba056d996540cf0a19fcf464df74ef667
--- /dev/null
+++ b/chrome/browser/plugin_installer.h
@@ -0,0 +1,48 @@
+// Copyright (c) 2011 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.
+
+#ifndef CHROME_BROWSER_PLUGIN_INSTALLER_H_
+#define CHROME_BROWSER_PLUGIN_INSTALLER_H_
+#pragma once
+
+#include "base/string16.h"
+#include "googleurl/src/gurl.h"
+
+class PluginInstaller {
+ public:
+  PluginInstaller(const std::string& identifier,
+                  const GURL& plugin_url,
+                  const GURL& help_url,
+                  const string16& name,
+                  bool url_for_display);
+  ~PluginInstaller();
+
+  // Unique identifier for the plug-in. Should be kept in sync with the
+  // identifier in plugin_list.cc.
+  const std::string& identifier() const { return identifier_; }
+
+  // Human-readable name of the plug-in.
+  const string16& name() const { return name_; }
+
+  // If |url_for_display| is false, |plugin_url| is the URL of the download page
+  // for the plug-in, which should be opened in a new tab. If it is true,
+  // |plugin_url| is the URL of the plug-in installer binary, which can be
+  // directly downloaded.
+  bool url_for_display() const { return url_for_display_; }
+  const GURL& plugin_url() const { return plugin_url_; }
+
+  // URL to open when the user clicks on the "Problems installing?" link.
+  const GURL& help_url() const { return help_url_; }
+
+ private:
+  std::string identifier_;
+  GURL plugin_url_;
+  GURL help_url_;
+  string16 name_;
+  bool url_for_display_;
+
+  DISALLOW_COPY_AND_ASSIGN(PluginInstaller);
+};
+
+#endif  // CHROME_BROWSER_PLUGIN_INSTALLER_H_