Implement permission_broker for serial devices.

device/serial/serial_io_handler_posix.cc

Index: device/serial/serial_io_handler_posix.cc
diff --git a/device/serial/serial_io_handler_posix.cc b/device/serial/serial_io_handler_posix.cc
index a215661be11586b02dad4c2194686cbe51bd1318..679987b0435597e550e14a69754179f1b3b469d8 100644
--- a/device/serial/serial_io_handler_posix.cc
+++ b/device/serial/serial_io_handler_posix.cc
@@ -11,7 +11,13 @@
 
 #if defined(OS_LINUX)
 #include <linux/serial.h>
-#endif
+#if defined(OS_CHROMEOS)
+#include "base/bind.h"
+#include "base/sys_info.h"
+#include "chromeos/dbus/dbus_thread_manager.h"
+#include "chromeos/dbus/permission_broker_client.h"
+#endif  // defined(OS_CHROMEOS)
+#endif  // defined(OS_LINUX)
 
 namespace {
 
@@ -127,6 +133,35 @@ scoped_refptr<SerialIoHandler> SerialIoHandler::Create(
   return new SerialIoHandlerPosix(file_thread_message_loop);
 }
 
+void SerialIoHandlerPosix::RequestAccess(
+    const std::string& port,
+    scoped_refptr<base::MessageLoopProxy> io_message_loop) {
+#if defined(OS_LINUX) && defined(OS_CHROMEOS)
+  if (base::SysInfo::IsRunningOnChromeOS()) {
+    chromeos::PermissionBrokerClient* client =
+        chromeos::DBusThreadManager::Get()->GetPermissionBrokerClient();
+    if (!client) {
+      DVLOG(1) << "Could not get permission_broker client.";
+      OnRequestAccessComplete(port, false /* failure */);
+      return;
+    }
+    io_message_loop->PostTask(

[Reilly Grant (use Gerrit), 2014/10/10 21:31:53]

chromeos::PermissionBrokerClient must as I understand it be used from the UI
thread only.

[Jorge Lucangeli Obes, 2014/10/13 20:56:43]

Done.

+        FROM_HERE,
+        base::Bind(
+            &chromeos::PermissionBrokerClient::RequestPathAccess,
+            base::Unretained(client),
+            port,
+            -1,
+            base::Bind(&SerialIoHandler::OnRequestAccessComplete, this, port)));
+  } else {
+    OnRequestAccessComplete(port, true /* success */);
+    return;
+  }
+#else
+  OnRequestAccessComplete(port, true /* success */);
+#endif  // defined(OS_LINUX) && defined(OS_CHROMEOS)
+}
+
 void SerialIoHandlerPosix::ReadImpl() {
   DCHECK(CalledOnValidThread());
   DCHECK(pending_read_buffer());