chromeos/dbus: Update Bluetooth GATT API clients to upstream definition

chromeos/dbus/fake_bluetooth_gatt_characteristic_client.cc

Index: chromeos/dbus/fake_bluetooth_gatt_characteristic_client.cc
diff --git a/chromeos/dbus/fake_bluetooth_gatt_characteristic_client.cc b/chromeos/dbus/fake_bluetooth_gatt_characteristic_client.cc
index ec04474634da320affc74545fa2ed43fe2bdda3c..1f3a9bf93345eb013626d88bb4b88480fc6298a9 100644
--- a/chromeos/dbus/fake_bluetooth_gatt_characteristic_client.cc
+++ b/chromeos/dbus/fake_bluetooth_gatt_characteristic_client.cc
@@ -176,14 +176,16 @@ void FakeBluetoothGattCharacteristicClient::ReadValue(
     }
     return;
   }
+
   base::Closure completed_callback;
   if (!IsHeartRateVisible()) {
     completed_callback =
         base::Bind(error_callback, kUnknownCharacteristicError, "");
   } else {
-    std::vector<uint8> value;
-    value.push_back(0x06);  // Location is "foot".
-    completed_callback = base::Bind(callback, value);
+    std::vector<uint8> value = {0x06};  // Location is "foot".
+    completed_callback = base::Bind(
+        &FakeBluetoothGattCharacteristicClient::DelayedReadValueCallback,
+        weak_ptr_factory_.GetWeakPtr(), object_path, callback, value);
   }
 
   if (extra_requests_ > 0) {
@@ -191,6 +193,7 @@ void FakeBluetoothGattCharacteristicClient::ReadValue(
         new DelayedCallback(completed_callback, extra_requests_);
     return;
   }
+
   completed_callback.Run();
 }
 
@@ -488,12 +491,7 @@ void FakeBluetoothGattCharacteristicClient::
 
   VLOG(2) << "Updating heart rate value.";
   std::vector<uint8> measurement = GetHeartRateMeasurementValue();
-
-  FOR_EACH_OBSERVER(
-      BluetoothGattCharacteristicClient::Observer,
-      observers_,
-      GattCharacteristicValueUpdated(
-          dbus::ObjectPath(heart_rate_measurement_path_), measurement));
+  heart_rate_measurement_properties_->value.ReplaceValue(measurement);
 
   base::MessageLoop::current()->PostDelayedTask(
       FROM_HERE,
@@ -504,6 +502,17 @@ void FakeBluetoothGattCharacteristicClient::
                      kHeartRateMeasurementNotificationIntervalMs));
 }
 
+void FakeBluetoothGattCharacteristicClient::DelayedReadValueCallback(
+    const dbus::ObjectPath& object_path,
+    const ValueCallback& callback,
+    const std::vector<uint8_t>& value) {
+  Properties* properties = GetProperties(object_path);
+  DCHECK(properties);
+
+  properties->value.ReplaceValue(value);
+  callback.Run(value);
+}
+
 std::vector<uint8>
 FakeBluetoothGattCharacteristicClient::GetHeartRateMeasurementValue() {
   // TODO(armansito): We should make sure to properly pack this struct to ensure