merge fx-team to mozilla-central a=merge

Bug 1303862 - update new debugger frontend (9/19/2016) r=me

Merge m-c to fx-team, a=merge

Bug 1303468 - Follow-up: Unbust Gradle lint. r=me MozReview-Commit-ID: IWB0CMVuNPr

Bug 1303468 - Follow-up: Unbust Gradle builds. r=me MozReview-Commit-ID: IbqnIC4L83A

Bug 1276418 - Remove getNode and all references to it in inspector tests; r=gl MozReview-Commit-ID: HIhOHZvtUl

Bug 1303468 - Part 2: Move Fennec- and Gradle-specific file back to base/. r=jchen This is only there to silence the linter. MozReview-Commit-ID: 8zEDsrbjyeo

Bug 1303468 - Part 1: Move more things into GeckoView. r=jchen MozReview-Commit-ID: CEjyq0TFn6j

Bug 1302040 - don't enter buffering while prerolling. r=cpearce MozReview-Commit-ID: Br9wC8PNorA

Bug 1302006. Part 4 - Let StateObject handle dormant request. r=kikuo MozReview-Commit-ID: FK3UwbYDexV

Bug 1302006. Part 3 - Let SeekingState handle dormant request. r=kikuo MozReview-Commit-ID: ADVsUSpE8Az

Bug 1302006. Part 2 - Let ShutdownState handle dormant request. r=kikuo MozReview-Commit-ID: 1uw7YjQps0i

Bug 1302006. Part 1 - Let DormantState handle dormant request. r=kikuo MozReview-Commit-ID: 8JqqAnlXzh4

Bug 1303920 - Update stylo reftest list; r=heycam MozReview-Commit-ID: 6fKFLbTL2gW

Bug 1288909, part 4 - Use a strong reference to the set in ClassInfo2NativeSetMap. r=billm Entries should end up getting cleared out from this table before the value dies, so let's just make the reference strong so that any mistakes will result in leaks and not use-after-frees. Using smart pointer classes with PLDHashtable is a little questionable, and I don't want to convert this one hash table to nsTHashtable, so I use manual addref and release. MozReview-Commit-ID: Kfg9veS6r11

Bug 1288909, part 3 - XPCWrappedNative:: and XPCWrappedNativeProto::Mark() don't do anything any more. r=billm Also clean up some random comments for code that was deleted earlier. MozReview-Commit-ID: 8JQx0FAH8wA

Bug 1288909, part 2 - Remove a bunch of now-useless XPCNativeSet marking-related things. r=billm MozReview-Commit-ID: 4YRn9Wx64a4

Bug 1288909, part 1 - Implement refcounting of XPCNativeSet. r=billm This patch is similar to bug 1288870. Strong references: - XPCCallContext::mSet: Like XPCNativeInterface, this only roots it when |mState >= HAVE_NAME|, and again this only requires changing SystemIsBeingShutDown(). - XPCWrappedNativeProto::mSet and XPCWrappedNative::mSet. These become RefPtrs. - stack: AutoMarkingNativeSetPtr become RefPtr<XPCNativeSet>. This lets me eliminate some uses of AutoJSContext. This is the bulk of the patch. Weak references: - mNativeSetMap. This reference gets cleared in the dtor. This requires bug 1290239 to actually find the entry for removal. - mClassInfo2NativeSetMap. The reference is in the value for this hash table, and we don't have the key in the set dtor. Fortunately, the only code that adds to this table is XPCNativeSet::GetNewOrUsed(nsIClassInfo* classInfo), which in turn is only called by GetNewOrUsed(nsIClassInfo* classInfo). This code creates a new XPCWrappedNativeProto, which (with my patch) holds a strong reference to the set that has been added to the table. This set is never changed or released until the dtor for the proto, which calls ClearCacheEntryForClassInfo(), removing the entry from the hashtable. Thus, the lifetime of the set is always going to be longer than the lifetime of the entry. Other notes: - Like XPCNativeInterface, this class uses placement |new| that requires a special destruction function, which with my patch is hidden away in the refcounting code. - This patch delete a bunch of marking/sweeping code from XPCJSRuntime::FinalizeCallback(), because the lifetimes are managed by the refcounting now. Some of the marking code is left behind to be cleaned up in a later patch. - I didn't see any methods that had XPCNativeSet** outparams. - MOZ_COUNT_{CTOR,DTOR}(XPCNativeSet) is not needed because it is now refcounted. MozReview-Commit-ID: 7oTorCwda1n

Bug 888781 part 2 - Scale cursor with the window scale on Windows. r=jimm MozReview-Commit-ID: C9LZpJF98mQ

Bug 888781 part 1 - Use cached default scale in GetDefaultScaleInternal of Windows. r=jimm MozReview-Commit-ID: Ebm7h3h2mrg