Roll cros_system_api and use constants pulled in.

device/bluetooth/dbus/bluetooth_le_advertising_manager_client.cc

Index: device/bluetooth/dbus/bluetooth_le_advertising_manager_client.cc
diff --git a/device/bluetooth/dbus/bluetooth_le_advertising_manager_client.cc b/device/bluetooth/dbus/bluetooth_le_advertising_manager_client.cc
index ef4fa8d93033032d176f948fedaec370b05101da..fcb39553a52b8d4f767d0010b0528230d1d2f63d 100644
--- a/device/bluetooth/dbus/bluetooth_le_advertising_manager_client.cc
+++ b/device/bluetooth/dbus/bluetooth_le_advertising_manager_client.cc
@@ -114,11 +114,9 @@ class BluetoothAdvertisementManagerClientImpl
                               uint16_t max_interval_ms,
                               const base::Closure& callback,
                               const ErrorCallback& error_callback) override {
-    // TODO(rkc): Replace the string "SetAdvertisingInterval" with the correct
-    // constant in service_constants.h once cros_system_api DEPS are rolled.
     dbus::MethodCall method_call(
         bluetooth_advertising_manager::kBluetoothAdvertisingManagerInterface,
-        "SetAdvertisingIntervals");
+        bluetooth_advertising_manager::kSetAdvertisingIntervals);
 
     dbus::MessageWriter writer(&method_call);
     writer.AppendUint16(min_interval_ms);