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

- Bug 1177892 part 1 - Remove BOOLEAN_TO_JSVAL and STRING_TO_JSVAL. r=evilpie (1fac17ff3)
- Bug 1177892 part 2 - Remove PRIVATE_TO_JSVAL. r=evilpie (4d7e80200)
- pointer style (cd27bd41a)
- Bug 1177892 part 3 - Remove OBJECT_TO_JSVAL. r=evilpie (ff66aebe5)
- Bug 1155342 - Disallow flagging a [NewObject] method with a [DependsOn] value that implies it might return the same value when called twice. r=bzbarsky (7ba1bb806)
- Bug 1129239. Don't require 'optional' keyword on trailing dictionary arguments if the dictionary has a required member. r=smaug (3ee24f57b)
- Bug 1152902 part 1. Add a way to flag a method in webidl as being identity-testable, so we'll expose such an identity test from bindings to other C++ code. r=peterv (43e038677)
- Bug 1152902 part 2. Add a fast path for the case when a Promise is resolved with another Promise. r=nsm (59f56603e)
- Bug 1172785 - Adding StaticClassOverride routing for JS implemented WebIDL, r=peterv (6ae76e198)
- Bug 1172785 - Using RTCCertificate for WebRTC, r=ekr (a69ee6167)
- fix build, file built twice (04f7e3d75)
- Bug 1155942. Treat USVString and ByteString as serializable values. r=bkelly (33e635737)
- Bug 913053. Split up IDLTypedef and IDLTypedefType, and likewise for IDLCallback vs IDLCallbackType, so it's clearer whether we're operating on types or objects represented by those types. r=khuey (661f45319)
- Bug 1168471 - Implement support for SharedArrayBuffers and SharedArrayViews in WebIDL. r=bz, r=lth, r=luke (77d63babc)
- Bug 1151269 - Fix the test used by Ion ICs for whether values can definitely be written to an unboxed object, r=jandem. (0463d6b53)
- Bug 1139474 - Watch for unboxed object properties when attaching Ion SETPROP ICs, r=jandem. (67bc9884d)
- Bug 1162199 - Use unboxed objects by default, r=jandem. (4dba9da90)
- Bug 1166678 - Inline first ObjectGroup::maybeSweep test, r=jandem. (ff179acb3)
- Bug 1166709 - After converting unboxed objects created by some initializer to natives, create native objects at that allocation site in the future, r=jandem. (14a5c92b5)
- Bug 1166709 - Mark definite properties when replacing the unboxed group used for literals at some pc, r=jandem. (487017105)
- Bug 1170372 - Use unboxed arrays for Array() and other functions keyed to allocation sites, r=jandem. (9153a5313)
- Bug 1175535 - Don't require objects embedded in MIR nodes to always be tenured, r=jandem. (75399d353)
- Bug 1190272 - Improve type checks when storing values into unboxed objects in Ion code, r=jandem. (0a91a08d5)
- Bug 1216130 - Fix extra checks for unboxed objects in PropertyWriteNeedsTypeBarrier. r=bhackett (4862b91ca)
- Bug 1166700 - Tolerate null failures targets when storing to an unboxed object must fail, r=jandem. (87a07aa3d)
- backport of Bug 1389436 - Explicitly instantiate gfxFont::GetShapedWord<uint8_t> for its use in gfxTextRun.cpp. r=jfkthame (5f6fc9f18)
- Bug 1164374 - Use StaticMutex in BrowserProcessSubThread. r=froydnj. (b0ad93d17)
- Bug 1167771 - Simplify the pre-barrier verifier's tracer use; r=sfink (0fc926804)
- Bug 1166037 - Part 2 - Modify common Baseline code for ARM64. r=djvj (739b36d83)
- Bug 1168864 followup - Remove unnecessary addProperty check from CheckHasNoSuchProperty. r=bhackett (3a464d07e)
- Bug 1166037 - Follow-up - Revert SimulatorType to Simulator. no_r=me (613b095d3)
- Bug 1166944 - Inline the only user of TraceObjectSlots; r=jonco (d830d12f0)
- pointer style (d567d3be2)
- Bug 1167291 - Generalize the marking tracer's cross-compartment check; r=jonco (b5f753147)
- Bug 1167318 - Remove GetGCThingTraceKind in favor of the typed Cell variants; r=jonco (f698f3a64)
- Bug 1167323 - Use internal interfaces to implement MarkCycleCollectorChildren; r=jonco (4acf85bdb)
- Bug 1167433 - AccessorShape is an AllocKind but not a TraceKind; r=jonco (ea92cd26a)
- pointer style (403e83b64)
- remove namespace hack (e3663d39b)
- Bug 1167453 - Rename JSGCTraceKind and make it a C++11 enum class; r=jonco (f7f435a16)
- Bug 1165966 - Update destructor assertions to handle failed initalization r=terrence (48237ed24)
- pointer style (f637042fc)
- Bug 774364 - Part 1: Inline Math.random() in Ion on x86_64. r=sstangl (8379ab0b2)
- Bug 1167677 - Try harder to find scratch registers for memory->memory MoveGroup moves, r=sunfish. (14d4b9962)
- pointer style (93bb53345)
- Bug 1185653 - Fix enumerate hook on unboxed objects to skip non-enume#able properties. r=jorendorff (4ecf41a10)
- Bug 1125624, part 1 - Implement ValidateAndApplyPropertyDescriptor steps 3-4, so that (once the corresponding code in StandardDefineProperty is deleted) freezing an already-frozen object with an addProperty class hook will not call the hook. r=Waldo. (f67f98231)
- Bug 1125624, part 2 - Change js::StandardDefineProperty to forward to s::DefineProperty. r=Waldo. (3ac5d9e30)
- Bug 1148568 - In JSON.parse with a reviver callback, ignore failure when defining properties. r=Waldo. (30c35a758)
- pointer style (826d092cf)
- Bug 1166950 - Only give constructor functions a prototype. r=efaust (d1b909603)
- Bug 1140482 - Add JSPROP_RESOLVING. Give NativeDefineProperty standard behavior in cases where a non-resolving define needs to trigger a resolve hook. r=Waldo. (b2d650abd)
- Bug 1140482 followup: Update ResolveInterpretedFunctionPrototype() failure-cases to return false instead of nullptr, now that return type is bool. rs=jorendorff (38eef1812)
- Bug 1148188 - part1: defaultShims. r=billm (9eb98a8fa)
- pointer style (ec74889f1)
- Bug 1101182 - One interpose call for one property access. r=bholley (111afff12)
- pointer style (b8dd593e9)
- Bug 1148188 - part2: interposeCall. r=billm (6fce5829e)
- Bug 1125624, part 3 - Remove js::StandardDefineProperty and js::DefineOwnProperty. r=Waldo. (a8a228f6e)
- Bug 1167244 - Handle nullptr return from maybeGetProperty(). r=bhackett (91958bdfc)
- pointer style (ebfc629a6)
- Bug 1170355 - Watch for indexes that don't fit in a jsid in Array.shift, r=jandem. (6c2f0a8a2)
- pointer style (a31367643)
- Bug 1165348 - Move Scalar Replacement after GVN. r=jandem (9296335d1)
- Bug 1161584 - Add TrackedStrategy::SetProp_InlineCache. r=shu (612ea0b32)
- Bug 923717 - Add IC fuzzing mode. r=efaust (a6a6a7460)
- Bug 1166711 part 2.1 - Check Scalar Replacement with both unboxed object and without. r=bhackett (e839f034a)
- Bug 1172943 - Use unboxed arrays for JSON and script literal arrays, r=jandem. (964d5a42f)
- Bug 1162986 - Relax type requirements for using baseline cache information when compiling GETPROP, r=jandem. (68e234a08)
- Bug 1168500 - Replace the operator, by variadic templates. r=Waldo (ccb173cb7)
- Bug 1166711 part 0.1 - Use JitSpewPrinter instead of stderr. r=bhackett (239022b72)
- Bug 1166711 part 0.2 - JitSpew add scope-base indentation level. r=bhackett (89288621e)
- Bug 1129313 - Scalar Replacement: Remove PostWriteBarrier at the same time as the stores. r=h4writer (f9df0503e)

js/ipc/JavaScriptShared.cpp

@@ -362,7 +362,7 @@ JavaScriptShared::fromVariant(JSContext* cx, const JSVariant& from, MutableHandl
           return true;
 
         case JSVariant::Tbool:
-          to.set(BOOLEAN_TO_JSVAL(from.get_bool()));
+          to.setBoolean(from.get_bool());
           return true;
 
         case JSVariant::TnsString: