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

- Bug 1159409 - (Part 1-) - Remove Init() from the Image interface. r=tn (0b663ee45)
- Bug 1159409 - (Part 2) - Remove ProgressTrackerInit and register Images with a ProgressTracker in ImageFactory. r=tn (a24d4e849)
- Bug 1179909: Refactor stable state handling. r=smaug This is motivated by three separate but related problems: (0ead73dbd)
- remove mPreemptingRunnableInfos of PM which I couldn't trace in FF (96474c90a)
- Bug 1179909: Build fix. r=me CLOSED TREE (5d35a65d5)
- Bug 1144418 - target events for text nodes in shadow dom to the nearest element in the flattened tree. r=wchen (26c0eb8b2)
- Bug 853889 - Check single-box orientaton in _cairo_bentley_ottmann_tessellate_rectangular_traps and _cairo_bentley_ottmann_tessellate_boxes. r=jmuizelaar (a13abee2f)
- Bug 1143303 - extend D2D circle workaround to work for small circles. r=bas (1ccb1c0c1)

dom/storage/DOMStorageDBThread.cpp

@@ -373,15 +373,13 @@ DOMStorageDBThread::ThreadObserver::OnDispatchedEvent(nsIThreadInternal *thread)
 
 NS_IMETHODIMP
 DOMStorageDBThread::ThreadObserver::OnProcessNextEvent(nsIThreadInternal *thread,
-                                       bool mayWait,
-                                       uint32_t recursionDepth)
+                                       bool mayWait)
 {
   return NS_OK;
 }
 
 NS_IMETHODIMP
 DOMStorageDBThread::ThreadObserver::AfterProcessNextEvent(nsIThreadInternal *thread,
-                                          uint32_t recursionDepth,
                                           bool eventWasProcessed)
 {
   return NS_OK;