Add permission parsing and the removeService API.

chrome/browser/extensions/api/bluetooth_low_energy/bluetooth_low_energy_event_router.cc

Index: chrome/browser/extensions/api/bluetooth_low_energy/bluetooth_low_energy_event_router.cc
diff --git a/chrome/browser/extensions/api/bluetooth_low_energy/bluetooth_low_energy_event_router.cc b/chrome/browser/extensions/api/bluetooth_low_energy/bluetooth_low_energy_event_router.cc
index bb9bfb9549fca8e0e3b84e0ee381c5ee60d3f6a1..c61cac4615fb0c7f4854f2a3c431c4bd2de9033b 100644
--- a/chrome/browser/extensions/api/bluetooth_low_energy/bluetooth_low_energy_event_router.cc
+++ b/chrome/browser/extensions/api/bluetooth_low_energy/bluetooth_low_energy_event_router.cc
@@ -1265,6 +1265,26 @@ void BluetoothLowEnergyEventRouter::AddServiceToApp(
   }
 }
 
+void BluetoothLowEnergyEventRouter::RemoveServiceFromApp(
+    const std::string& app_id,
+    const std::string& service_id) {
+  const auto& services = app_id_to_service_ids_.find(app_id);
+  if (services == app_id_to_service_ids_.end()) {
+    LOG(WARNING) << "No service mapping exists for app: " << app_id;
+    return;
+  }
+
+  const auto& service =
+      find(services->second.begin(), services->second.end(), service_id);
+  if (service == services->second.end()) {
+    LOG(WARNING) << "Service:" << service_id
+                 << " doesn't exist in app: " << app_id;
+    return;
+  }
+
+  services->second.erase(service);
+}
+
 void BluetoothLowEnergyEventRouter::RegisterGattService(
     const Extension* extension,
     const std::string& service_id,