Cleanup: Better constify some strings in chrome/browser/{chromeos,extensions}.

chrome/browser/extensions/activity_log/fullstream_ui_policy.h

 // Copyright 2013 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_EXTENSIONS_ACTIVITY_LOG_FULLSTREAM_UI_POLICY_H_
 #define CHROME_BROWSER_EXTENSIONS_ACTIVITY_LOG_FULLSTREAM_UI_POLICY_H_
 
 #include <string>
 
 #include "chrome/browser/extensions/activity_log/activity_database.h"
@@ skipping 35 matching lines @@
   // Clean the URL data stored for this policy.
   void RemoveURLs(const std::vector<GURL>& restrict_urls) override;
 
   // Clean the data related to this extension for this policy.
   void RemoveExtensionData(const std::string& extension_id) override;
 
   // Delete everything in the database.
   void DeleteDatabase() override;
 
   // Database table schema.
-  static const char* kTableName;
-  static const char* kTableContentFields[];
-  static const char* kTableFieldTypes[];
+  static const char kTableName[];
+  static const char* const kTableContentFields[];
+  static const char* const kTableFieldTypes[];
   static const int kTableFieldCount;
 
  protected:
   // Only ever run by OnDatabaseClose() below; see the comments on the
   // ActivityDatabase class for an overall discussion of how cleanup works.
   ~FullStreamUIPolicy() override;
 
   // The ActivityDatabase::Delegate interface.  These are always called from
   // the database thread.
   bool InitDatabase(sql::Connection* db) override;
@@ skipping 39 matching lines @@
       const Action::ActionType type,
       const std::string& api_name,
       const std::string& page_url,
       const std::string& arg_url,
       const int days_ago);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_ACTIVITY_LOG_FULLSTREAM_UI_POLICY_H_