This adds a plugin selection policy for selecting allowed plugins

chrome/browser/chromeos/plugin_selection_policy.h

+// 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_PLUGIN_SELECTION_POLICY_H_
+#define CHROME_BROWSER_CHROMEOS_PLUGIN_SELECTION_POLICY_H_
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "base/gtest_prod_util.h"
+#include "base/ref_counted.h"
+#include "webkit/glue/plugins/webplugininfo.h"
+
+class GURL;
+class FilePath;
+
+namespace chromeos {
+
+#if !defined(OS_CHROMEOS)
+#error This file is meant to be compiled on ChromeOS only.
+#endif
+
+// This class is used to provide logic for selection of a plugin
+// executable path in the browser.  It loads a policy file for
+// selection of particular plugins based on the domain they are be
+// instantiated for.  It is used by the PluginService.  It is (and
+// should be) only used for ChromeOS.
+
+// The functions in this class must only be called on the FILE thread
+// (and will DCHECK if they aren't).
+
+class PluginSelectionPolicy
+    : public base::RefCountedThreadSafe<PluginSelectionPolicy> {
+ public:
+  PluginSelectionPolicy();
+
+  // This should be called before any other method.  This starts the
+  // process of initialization on the FILE thread.
+  void StartInit();
+
+  // Returns the first allowed plugin in the given vector of plugin
+  // information.  Returns -1 if no plugins in the info vector are
+  // allowed (or if the info vector is empty).  InitFromFile must
+  // complete before any calls to FindFirstAllowed happen or it will
+  // assert.
+  int FindFirstAllowed(const GURL& url, const std::vector<WebPluginInfo>& info);
+
+  // Applies the current policy to the given path using the url to
+  // look up what the policy for that domain is.  Returns true if the
+  // given plugin is allowed for that domain.  InitFromFile must
+  // complete before any calls to IsAllowed happen or it will assert.
+  bool IsAllowed(const GURL& url, const FilePath& path);
+
+ private:
+  // To allow access to InitFromFile
+  FRIEND_TEST_ALL_PREFIXES(PluginSelectionPolicyTest, Basic);
+  FRIEND_TEST_ALL_PREFIXES(PluginSelectionPolicyTest, InitFromFile);
+  FRIEND_TEST_ALL_PREFIXES(PluginSelectionPolicyTest, IsAllowed);
+  FRIEND_TEST_ALL_PREFIXES(PluginSelectionPolicyTest, FindFirstAllowed);
+
+  // Initializes from the default policy file.
+  bool Init();
+
+  // Initializes from the given file.
+  bool InitFromFile(const FilePath& policy_file);
+
+  typedef std::vector<std::pair<bool, std::string> > Policy;
+  typedef std::map<std::string, Policy> PolicyMap;
+
+  PolicyMap policies_;
+  bool initialized_;
+
+  DISALLOW_COPY_AND_ASSIGN(PluginSelectionPolicy);
+};
+
+}  // namespace chromeos
+#endif  // CHROME_BROWSER_CHROMEOS_PLUGIN_SELECTION_POLICY_H_