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

- Bug 1121855 - Fix camera crash. r=aosmond (6ad4335ae)
- Bug 1139721 - Fix camera memory leaks for onfacedetected events, failed initializations and capabilities. r=mikeh (663bbde8c)
- Bug 1165729 - Check SetCapacity return value in nsSMILAnimationFunction::GetValues. r=dholbert (100ecf2f7)
- Bug 968520 - Add mozilla::fallible to Fallible{Auto,}TArray::SetCapacity calls. r=froydnj (2c120f71a)
- Scrollbar thumbs can overlap scrollbar arrows during APZ scrolling. (bug 1152469, r=botond,mstange) (a2e9ac1bf)
- Bug 1148889 - Treat subclasses of scrollframes as animated geometry roots. r=mstange (434719455)
- Bug 1155025. Make the root layer on fennec have null scroll id with containerless scrolling. r=mstange (eb1bb3acd)
- remove test (63f014d13)
- Bug 1151306 - Add a reftest. r=roc (56c4137ae)
- Bug 1151145 - Add a reftest. r=jrmuizel (9684c3f0a)
- Bug 1150021. Make sure that boxes inside vertical RTL boxes are placed on the right. r=roc (c4b3e7e06)
- Bug 1156129 - Take border radius into account when calculating the bounds of border display items. r=roc (35b70f9a8)
- Bug 1152902 part 2. Add a fast path for the case when a Promise is resolved with another Promise. r=nsm (33a210977)

dom/camera/DOMCameraCapabilities.cpp

@@ -323,6 +323,7 @@ CameraCapabilities::CameraCapabilities(nsPIDOMWindow* aWindow,
   , mCameraControl(aCameraControl)
 {
   DOM_CAMERA_LOGT("%s:%d : this=%p\n", __func__, __LINE__, this);
+  MOZ_COUNT_CTOR(CameraCapabilities);
   if (mCameraControl) {
     mListener = new CameraClosedListenerProxy<CameraCapabilities>(this);
     mCameraControl->AddListener(mListener);