Convert src/remoting to std::string/char* away from wstring/wchar_t*.

remoting/host/host_config.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 REMOTING_HOST_HOST_CONFIG_H_
 #define REMOTING_HOST_HOST_CONFIG_H_
 
 #include <string>
 
 #include "base/ref_counted.h"
 
 class Task;
 
 namespace remoting {
 
 // Following constants define names for configuration parameters.
 
 // Login used to authenticate in XMPP network.
-extern const wchar_t* kXmppLoginConfigPath;
+extern const char* kXmppLoginConfigPath;
 // Auth token used to authenticate in XMPP network.
-extern const wchar_t* kXmppAuthTokenConfigPath;
+extern const char* kXmppAuthTokenConfigPath;
 // Unique identifier of the host used to register the host in directory.
 // Normally a random UUID.
-extern const wchar_t* kHostIdConfigPath;
+extern const char* kHostIdConfigPath;
 // Readable host name.
-extern const wchar_t* kHostNameConfigPath;
+extern const char* kHostNameConfigPath;
 // Private keys used for host authentication.
-extern const wchar_t* kPrivateKeyConfigPath;
+extern const char* kPrivateKeyConfigPath;
 
 // HostConfig interace provides read-only access to host configuration.
 class HostConfig : public base::RefCountedThreadSafe<HostConfig> {
  public:
   HostConfig() { };
   virtual ~HostConfig() { }
 
-  virtual bool GetString(const std::wstring& path,
-                         std::wstring* out_value) = 0;
-  virtual bool GetString(const std::wstring& path,
-                         std::string* out_value) = 0;
+  virtual bool GetString(const std::string& path, std::string* out_value) = 0;
 
   DISALLOW_COPY_AND_ASSIGN(HostConfig);
 };
 
 // MutableHostConfig extends HostConfig for mutability.
 class MutableHostConfig : public HostConfig {
  public:
   MutableHostConfig() { };
 
   // Update() must be used to update config values.
   // It acquires lock, calls the specified task, releases the lock and
   // then schedules the config to be written to storage.
   virtual void Update(Task* task) = 0;
 
   // SetString() updates specified config value. This methods must only
   // be called from task specified in Update().
-  virtual void SetString(const std::wstring& path,
-                         const std::wstring& in_value) = 0;
-  virtual void SetString(const std::wstring& path,
+  virtual void SetString(const std::string& path,
                          const std::string& in_value) = 0;
 
   DISALLOW_COPY_AND_ASSIGN(MutableHostConfig);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_HOST_CONFIG_H_