import changes from `dev' branch of rmottola/Arctic-Fox:

- Bug 1144410 - Remove finished transitions when a frame transitions away from being display:none. r=birtles (a462476b4)
- Bug 1159082 - Rename *Readonly animation interfaces to *ReadOnly. r=smaug (bdb20bd01)
- Bug 1134019 - Extract MLS fallback to its own class for reuse - r=jdm (a21fd4a8e)
- Bug 1132229: Handle I/O errors in Bluetooth's daemon backend, r=shuang (1a669ca4c)
- Bug 1146355: Move Bluetooth legacy interface into sub-directory bluetooth1/, r=joliu (228f25961)
- parts missing of Bug 1153796: Share BluetoothInterfaceHelpers.{cpp,h} between Bluetooth v1 and v2, r=btian (731c22c4f)
- Bug 1152821: Move dom/bluetooth/bluetooth2/BluetoothCommon.h to dom/bluetooth, r=joliu (4dc2a17c6)
- Bug 1152821: Share BluetoothCommon.h between Bluetooth v1 and v2, r=joliu (3d091624e)
- Bug 1146355: Add Bluetooth v2 to Bluetooth build scripts, r=shuang (1dc627ef9)
- Bug 1139298: Replace type int with BluetoothGattStatus enum for GATT client callbacks. r=btian (ab1b8790d)
- Bug 1136514 - Add ReadRemoteRssi in GATT client. f=jocelyn, r=btian, r=mrbkap (8d14427a4)
- Bug 1114515 - Part 1: Revise BluetoothGattHALInterface for discovering all services and first characteristic/descriptor. r=btian (144ca4367)
- Bug 1114515 - Part 2: Add BluetoothUuid, BluetoothGattId[], BluetoothGattServiceId[] into bluetooth ipc protocol. r=btian (e03eb9e91)
- Bug 1137579 - [bluetooth2] Replace constant with |sizeof| in |StringToUuid| function, r=shuang (23167ced8)
- Bug 1133655 - Replace |DispatchBluetoothReply| with |DispatchReplySuccess| and |DispatchReplyError|, f=jocelyn, f=jaliu, r=shuang (03b95a69e)
- Bug 1137103 - Simplify Bluetooth signal distribution function, r=shuang (00107e42f)
- Bug 1114515 - Part 3: Implement GATT client DiscoverServices API. r=btian, r=mrbkap (d1196932e)
- Bug 1114515 - Par h4: Implement Service, Characteristic, Descriptor interfaces for GATT client DiscoverServices API. r=btian, r=mrbkap (c0b0dcc41)

dom/base/nsDOMMutationObserver.cpp

@@ -328,7 +328,7 @@ void
 nsAnimationReceiver::RecordAnimationMutation(Animation* aAnimation,
                                              AnimationMutation aMutationType)
 {
-  KeyframeEffectReadonly* effect = aAnimation->GetEffect();
+  KeyframeEffectReadOnly* effect = aAnimation->GetEffect();
   if (!effect) {
     return;
   }