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

remoting/host/host_config.h

Index: remoting/host/host_config.h
diff --git a/remoting/host/host_config.h b/remoting/host/host_config.h
index 7c92649decadec3fc4ed288569a5e57240ef24c2..22ef5333f4da0c7d5222139371ac81791d5b7701 100644
--- a/remoting/host/host_config.h
+++ b/remoting/host/host_config.h
@@ -16,16 +16,16 @@ 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> {
@@ -33,10 +33,7 @@ class HostConfig : public base::RefCountedThreadSafe<HostConfig> {
   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);
 };
@@ -53,9 +50,7 @@ class MutableHostConfig : public HostConfig {
 
   // 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);