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

remoting/host/json_host_config.cc

Index: remoting/host/json_host_config.cc
diff --git a/remoting/host/json_host_config.cc b/remoting/host/json_host_config.cc
index 891ca789f4a0ce673b7d699165f37767be479a97..cd868ce3dcaf9dbde1ce5b8ed45034a42da2abd6 100644
--- a/remoting/host/json_host_config.cc
+++ b/remoting/host/json_host_config.cc
@@ -38,13 +38,7 @@ bool JsonHostConfig::Read() {
   return true;
 }
 
-bool JsonHostConfig::GetString(const std::wstring& path,
-                               std::wstring* out_value) {
-  AutoLock auto_lock(lock_);
-  return values_->GetString(path, out_value);
-}
-
-bool JsonHostConfig::GetString(const std::wstring& path,
+bool JsonHostConfig::GetString(const std::string& path,
                                std::string* out_value) {
   AutoLock auto_lock(lock_);
   return values_->GetString(path, out_value);
@@ -60,13 +54,7 @@ void JsonHostConfig::Update(Task* task) {
       FROM_HERE, NewRunnableMethod(this, &JsonHostConfig::DoWrite));
 }
 
-void JsonHostConfig::SetString(const std::wstring& path,
-                               const std::wstring& in_value) {
-  lock_.AssertAcquired();
-  values_->SetString(path, in_value);
-}
-
-void JsonHostConfig::SetString(const std::wstring& path,
+void JsonHostConfig::SetString(const std::string& path,
                                const std::string& in_value) {
   lock_.AssertAcquired();
   values_->SetString(path, in_value);