Add support for multiple simultaneous subresource_filter::Configurations.

chrome/browser/component_updater/subresource_filter_component_installer.h

 // Copyright 2016 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_COMPONENT_UPDATER_SUBRESOURCE_FILTER_COMPONENT_INSTALLER_H_
 #define CHROME_BROWSER_COMPONENT_UPDATER_SUBRESOURCE_FILTER_COMPONENT_INSTALLER_H_
 
 #include <memory>
 #include <string>
 #include <vector>
 
+#include "base/gtest_prod_util.h"
 #include "components/component_updater/default_component_installer.h"
 
 namespace base {
 class FilePath;
 }  // namespace base
 
 namespace component_updater {
 
 class ComponentUpdateService;
 
 // Component for receiving Safe Browsing Subresource filtering rules.
 class SubresourceFilterComponentInstallerTraits
     : public ComponentInstallerTraits {
  public:
   static const char kManifestRulesetFormatKey[];
   static const int kCurrentRulesetFormat;
 
   SubresourceFilterComponentInstallerTraits();
   ~SubresourceFilterComponentInstallerTraits() override;
 
  private:
   friend class SubresourceFilterComponentInstallerTest;
+  FRIEND_TEST_ALL_PREFIXES(SubresourceFilterComponentInstallerTest,
+                           InstallerTag);
 
   static std::string GetInstallerTag();
 
   // ComponentInstallerTraits implementation.
   bool SupportsGroupPolicyEnabledComponentUpdates() const override;
   bool RequiresNetworkEncryption() const override;
   update_client::CrxInstaller::Result OnCustomInstall(
       const base::DictionaryValue& manifest,
       const base::FilePath& install_dir) override;
   bool VerifyInstallation(const base::DictionaryValue& manifest,
                           const base::FilePath& install_dir) const override;
   void ComponentReady(const base::Version& version,
                       const base::FilePath& install_dir,
                       std::unique_ptr<base::DictionaryValue> manifest) override;
   base::FilePath GetRelativeInstallDir() const override;
   void GetHash(std::vector<uint8_t>* hash) const override;
   std::string GetName() const override;
   update_client::InstallerAttributes GetInstallerAttributes() const override;
   std::vector<std::string> GetMimeTypes() const override;
 
   DISALLOW_COPY_AND_ASSIGN(SubresourceFilterComponentInstallerTraits);
 };
 
 void RegisterSubresourceFilterComponent(ComponentUpdateService* cus);
 
 }  // namespace component_updater
 
 #endif  // CHROME_BROWSER_COMPONENT_UPDATER_SUBRESOURCE_FILTER_COMPONENT_INSTALLER_H_