Bug 1403162 - remove StackRooting. r=jonco

js/src/jsgc.cpp

@@ -976,7 +976,6 @@ const char* gc::ZealModeHelpText =
     "    3: (FrameGC) Collect when the window paints (browser only)\n"
     "    4: (VerifierPre) Verify pre write barriers between instructions\n"
     "    5: (FrameVerifierPre) Verify pre write barriers between paints\n"
-    "    6: (StackRooting) Verify stack rooting\n"
     "    7: (GenerationalGC) Collect the nursery every N nursery allocations\n"
     "    8: (IncrementalRootsThenFinish) Incremental GC in two slices: 1) mark roots 2) finish collection\n"
     "    9: (IncrementalMarkAllThenFinish) Incremental GC in two slices: 1) mark all 2) new marking and finish\n"

js/src/jsgc.h

@@ -1169,7 +1169,6 @@ inline void CheckValueAfterMovingGC(const JS::Value& value);
             D(FrameGC, 3)                      \
             D(VerifierPre, 4)                  \
             D(FrameVerifierPre, 5)             \
-            D(StackRooting, 6)                 \
             D(GenerationalGC, 7)               \
             D(IncrementalRootsThenFinish, 8)   \
             D(IncrementalMarkAllThenFinish, 9) \