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

chrome/browser/extensions/activity_log/activity_database.h

 // Copyright (c) 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_ACTIVITY_DATABASE_H_
 #define CHROME_BROWSER_EXTENSIONS_ACTIVITY_LOG_ACTIVITY_DATABASE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 115 matching lines @@
 
   bool is_db_valid() const { return valid_db_; }
 
   // A helper method for initializing or upgrading a database table.  The
   // content_fields array should list the names of all of the columns in the
   // database. The field_types should specify the types of the corresponding
   // columns (e.g., INTEGER or LONGVARCHAR). There should be the same number of
   // field_types as content_fields, since the two arrays should correspond.
   static bool InitializeTable(sql::Connection* db,
                               const char* table_name,
-                              const char* content_fields[],
-                              const char* field_types[],
+                              const char* const content_fields[],
+                              const char* const field_types[],
                               const int num_content_fields);
 
   // Runs the given callback, passing it a handle to the database connection.
   // If the database is not valid, the callback is run (to allow it to do any
   // needed cleanup) but passed a NULL value.
   void RunOnDatabase(const base::Callback<void(sql::Connection*)>& callback);
 
  private:
   // This should never be invoked by another class. Use Close() to order a
   // suicide.
@@ skipping 48 matching lines @@
   friend class ActivityLogDatabasePolicy;
   FRIEND_TEST_ALL_PREFIXES(ActivityDatabaseTest, BatchModeOff);
   FRIEND_TEST_ALL_PREFIXES(ActivityDatabaseTest, BatchModeOn);
   FRIEND_TEST_ALL_PREFIXES(ActivityDatabaseTest, BatchModeFlush);
   DISALLOW_COPY_AND_ASSIGN(ActivityDatabase);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_ACTIVITY_LOG_ACTIVITY_DATABASE_H_