Use ChannelMojo for remote security key channels.

remoting/host/security_key/security_key_ipc_constants.cc

 // Copyright 2016 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.
 
 #include "remoting/host/security_key/security_key_ipc_constants.h"
 
 #include "base/lazy_instance.h"
 #include "build/build_config.h"
 
 #if defined(OS_POSIX)
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/logging.h"
 #endif  // defined(OS_POSIX)
 
 namespace {
-base::LazyInstance<std::string> g_security_key_ipc_channel_name =
-    LAZY_INSTANCE_INITIALIZER;
+base::LazyInstance<mojo::edk::NamedPlatformHandle>
+    g_security_key_ipc_channel_name = LAZY_INSTANCE_INITIALIZER;
 
-const char kSecurityKeyIpcChannelName[] = "security_key_ipc_channel";
+constexpr char kSecurityKeyIpcChannelName[] = "security_key_ipc_channel";
 
 }  // namespace
 
 namespace remoting {
 
 const char kSecurityKeyConnectionError[] = "ssh_connection_error";
 
-const std::string& GetSecurityKeyIpcChannelName() {
-  if (g_security_key_ipc_channel_name.Get().empty()) {
-    g_security_key_ipc_channel_name.Get() = kSecurityKeyIpcChannelName;
+const mojo::edk::NamedPlatformHandle& GetSecurityKeyIpcChannel() {
+  if (!g_security_key_ipc_channel_name.Get().is_valid()) {
+    g_security_key_ipc_channel_name.Get() =
+        mojo::edk::NamedPlatformHandle(kSecurityKeyIpcChannelName);
   }
 
   return g_security_key_ipc_channel_name.Get();
 }
 
-void SetSecurityKeyIpcChannelNameForTest(const std::string& channel_name) {
-  g_security_key_ipc_channel_name.Get() = channel_name;
+void SetSecurityKeyIpcChannelForTest(
+    const mojo::edk::NamedPlatformHandle& channel_handle) {
+  g_security_key_ipc_channel_name.Get() = channel_handle;
 }
 
 std::string GetChannelNamePathPrefixForTest() {
   std::string base_path;
 #if defined(OS_POSIX)
   base::FilePath base_file_path;
   if (base::GetTempDir(&base_file_path)) {
     base_path = base_file_path.AsEndingWithSeparator().value();
   } else {
     LOG(ERROR) << "Failed to retrieve temporary directory.";
   }
 #endif  // defined(OS_POSIX)
   return base_path;
 }
 
 }  // namespace remoting