Bug 1227144 - Remove unused AutoRegExpStaticsBuffer; r=jonco

--HG--
extra : rebase_source : c6a792b7f53d61a22a179fd2bd486d8920245d92

js/src/vm/RegExpStatics.h

@@ -63,8 +63,6 @@ class RegExpStatics
     struct InitBuffer {};
     explicit RegExpStatics(InitBuffer) {}
 
-    friend class AutoRegExpStaticsBuffer;
-
   public:
     /* Mutators. */
     inline void updateLazily(JSContext* cx, JSLinearString* input,
@@ -160,38 +158,6 @@ class RegExpStatics
     }
 };
 
-class MOZ_RAII AutoRegExpStaticsBuffer : private JS::CustomAutoRooter
-{
-  public:
-    explicit AutoRegExpStaticsBuffer(JSContext* cx
-                                     MOZ_GUARD_OBJECT_NOTIFIER_PARAM)
-      : CustomAutoRooter(cx), statics(RegExpStatics::InitBuffer())
-    {
-        MOZ_GUARD_OBJECT_NOTIFIER_INIT;
-    }
-
-    RegExpStatics& getStatics() { return statics; }
-
-  private:
-    virtual void trace(JSTracer* trc) {
-        if (statics.matchesInput) {
-            TraceRoot(trc, reinterpret_cast<JSString**>(&statics.matchesInput),
-                      "AutoRegExpStaticsBuffer matchesInput");
-        }
-        if (statics.lazySource) {
-            TraceRoot(trc, reinterpret_cast<JSString**>(&statics.lazySource),
-                      "AutoRegExpStaticsBuffer lazySource");
-        }
-        if (statics.pendingInput) {
-            TraceRoot(trc, reinterpret_cast<JSString**>(&statics.pendingInput),
-                      "AutoRegExpStaticsBuffer pendingInput");
-        }
-    }
-
-    RegExpStatics statics;
-    MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
-};
-
 inline bool
 RegExpStatics::createDependent(JSContext* cx, size_t start, size_t end, MutableHandleValue out)
 {