[Bluetooth] Standardize Bluetooth device address format to XX:XX:XX:XX:XX:XX.

device/bluetooth/bluetooth_adapter.cc

Index: device/bluetooth/bluetooth_adapter.cc
diff --git a/device/bluetooth/bluetooth_adapter.cc b/device/bluetooth/bluetooth_adapter.cc
index d9a24f05ad8c696a5d3ba29aa5564ad0155e77b6..1f5922292d0db2dc0230d289b4cd5252c0858914 100644
--- a/device/bluetooth/bluetooth_adapter.cc
+++ b/device/bluetooth/bluetooth_adapter.cc
@@ -73,7 +73,12 @@ BluetoothDevice* BluetoothAdapter::GetDevice(const std::string& address) {
 
 const BluetoothDevice* BluetoothAdapter::GetDevice(
     const std::string& address) const {
-  DevicesMap::const_iterator iter = devices_.find(address);
+  std::string canonicalized_address =
+      BluetoothDevice::CanonicalizeAddress(address);
+  if (canonicalized_address.empty())
+    return NULL;
+
+  DevicesMap::const_iterator iter = devices_.find(canonicalized_address);
   if (iter != devices_.end())
     return iter->second;